As I stood in my kitchen, the comforting aroma of simmering marinara wafted through the air, instantly whisking me away to my favorite Italian restaurant. Today, I’m excited to share my Low Carb Meatball Casserole—a dish that harmonizes juicy, flavorful meatballs with gooey, melted cheese and a rich tomato sauce. Not only is this keto dinner recipe a delightful crowd-pleaser, but it’s also a fantastic way to sneak in some veggies with shredded zucchini. Whether you’re cooking for a family gathering or seeking a cozy weeknight meal, this casserole promises to satisfy those cravings without straying from your low-carb goals. Are you ready to elevate your dinner game? Let’s dive into this hearty, Italian-inspired dish that’s sure to impress!

Why is Meatball Casserole a Must-Try?

Comforting, Hearty Flavor: This Low Carb Meatball Casserole merges classic Italian comfort food with a modern twist, making it perfect for those who crave home-cooked goodness.
Easy Preparation: With simple ingredients and straightforward steps, you’ll have this dish ready in no time, perfect for busy weeknights.
Veggie Sneak-In: The addition of shredded zucchini not only adds moisture but also helps pack in some greens for those looking to eat healthier!
Crowd-Pleasing Delight: Whether you’re hosting a family gathering or enjoying a quiet dinner, this casserole is bound to be a hit, appealing to both keto and non-keto eaters alike.
Make-Ahead Convenience: You can prepare this dish in advance and simply pop it in the oven when it’s time to serve. It’s a fantastic option for stress-free entertaining!
Looking for more hearty meals? Check out my Creamy Tuna Noodle Casserole and Cheesy Sausage Casserole for inspiration!

Meatball Casserole Ingredients

For the Meatballs

  • Ground Turkey – A lean protein choice; you can substitute ground chicken or beef for varied flavors.
  • Italian Sausage – Brings in a spicy, flavorful kick; consider turkey sausage for a lighter version or skip it for a vegetarian take.
  • Shredded Zucchini – Adds moisture while sneaking in veggies; can be replaced with chopped spinach if preferred.
  • Egg – Acts as a binder; for a vegan option, a flax egg can do the trick.
  • Dried Minced Onion – Infuses aromatic flavor; using fresh can enhance taste but may require more adjustments.
  • Dried Garlic Powder – Adds depth to the meatballs; fresh garlic is a flavorful alternative.
  • Dried Basil – Imparts that classic Italian essence; substitute with fresh basil for an aromatic boost.
  • Salt – Enhances flavors; tailor to your dietary needs.

For the Sauce and Topping

  • Marinara Sauce – Essential for flavor and moisture; choose a no-sugar-added variety for a healthier option.
  • Shredded Mozzarella – Provides that gooey, melty texture; swap with cheddar for a sharper flavor.
  • Grated Parmesan – Deepens flavor and adds savoriness; necessary for traditional taste—pecorino is a good alternative too.
  • Shredded Cheese Blend (Mozzarella and Provolone) – For an indulgent, golden crust; mix any melting cheeses you love.

In crafting this cozy Meatball Casserole, you’re not just preparing a meal; you’re cultivating a gathering of warm flavors and delightful textures that make every meal memorable. Enjoy the journey and let’s get cooking!

Step‑by‑Step Instructions for Meatball Casserole

Step 1: Preheat and Prepare the Dish
Begin by preheating your oven to 400°F (200°C). While it’s warming up, take a 9×13 casserole dish and lightly coat it with cooking spray to ensure easy release once the Meatball Casserole is baked. Set aside the dish as you prepare the meatball mixture, filling your kitchen with the delightful anticipation of cooking.

Step 2: Combine Meatball Ingredients
In a large mixing bowl, combine the ground turkey, Italian sausage, shredded zucchini, egg, dried minced onion, garlic powder, dried basil, and salt. Use your hands to mix everything thoroughly until well incorporated. The mixture should appear moist and cohesive, creating the foundation for the savory meatballs that will bring your Meatball Casserole to life.

Step 3: Form the Meatballs
Once the meat mixture is well combined, take a handful and roll it into meatballs, approximately the size of a golf ball. You should end up with about 24 meatballs. Carefully place each meatball into the prepared casserole dish, ensuring they are evenly spaced to allow for even cooking. This step ensures that each meatball in your casserole is packed with flavor and tenderness.

Step 4: Bake the Meatballs
Slide the casserole dish into the preheated oven and bake for 30 minutes. As the meatballs cook, they will begin to turn golden brown and develop a lovely aroma. To ensure doneness, check that the internal temperature of the meatballs reaches 150-155°F. This step is crucial for achieving that perfect texture in your Meatball Casserole.

Step 5: Add Sauce and Cheese
After 30 minutes, carefully remove the casserole from the oven. Drain any excess liquid from the dish, then generously pour marinara sauce over the meatballs, making sure they are well coated. Sprinkle shredded mozzarella and grated Parmesan on top of the sauce. This combination will create a rich, cheesy topping that is a highlight of your Meatball Casserole.

Step 6: Final Bake for Melting
Return the casserole to the oven and bake for an additional 10-15 minutes. As it bakes, keep an eye on the dish; the goal is to melt the cheese until it’s bubbly and golden. You’ll know it’s ready when the cheese is visibly gooey and slightly golden, making it irresistibly inviting.

Step 7: Optionally Broil for Perfection
If you desire an extra crisp, enticing top, switch your oven to broil mode and broil the casserole for 2-3 minutes. Keep a vigilant watch—cheese can burn quickly! Once you see the cheese achieve that perfect golden crust, remove the Meatball Casserole from the oven, allowing it to cool slightly before serving.

Expert Tips for Meatball Casserole

Uniform Meatballs: Ensure meatballs are of equal size for even cooking and consistent flavor throughout the Meatball Casserole.

Quality Marinara: For enhanced taste, use a high-quality marinara sauce. A homemade option or no-sugar-added variety is ideal for health-conscious cooks.

Watch the Broil: Be cautious while broiling; it only takes a moment for cheese to go from perfectly golden to burnt. Stay close to the oven!

Fresh vs. Dried Herbs: Opt for dried herbs when cooking, but if using fresh, remember to adjust the quantities, as they’re often stronger in flavor.

Make Ahead: Prepare the meatballs in advance, and freeze them uncooked. When you’re ready, assemble and bake for a quick, delicious dinner!

Freezing Tips: If you plan to freeze the casserole, bake the meatballs first, then assemble the dish before freezing for best results.

Meatball Casserole Variations & Substitutions

Feel free to mix things up and make this Meatball Casserole your own with these creative ideas!

  • Dairy-Free: Substitute all cheese with dairy-free options like cashew cheese or nutritional yeast for a cheesy flavor without dairy.
  • Extra Veggies: Add finely chopped bell peppers or mushrooms to the meatball mixture for added flavor and nutrients. You’ll be pleasantly surprised by how well they complement the dish!
  • Spicy Kick: Mix in some crushed red pepper flakes or diced jalapeños to elevate the heat level and give your casserole a deliciously bold twist.
  • Herb Infusion: Experiment with fresh herbs like oregano or thyme in place of dried basil for an aromatic depth that truly elevates the Italian essence.
  • Meat Variability: Use a different protein such as ground lamb or a plant-based meat substitute for a new flavor experience. Whichever you choose, it will still result in a succulent dish.
  • Cheese Swap: Try a blend of gouda and cheddar instead of mozzarella for a rich and sharp flavor profile. Your taste buds will thank you for this indulgent upgrade!
  • Keto-Friendly Veggies: Instead of zucchini, you can use spaghetti squash for a twist on the traditional noodle that still fits your low-carb lifestyle.
  • Bacon Boost: Crumble crispy bacon into the meatball mixture or sprinkle it over the top before serving for an irresistible smoky flavor.

So, are you ready to make this Meatball Casserole your very own? Enjoy crafting this dish, and consider pairing it with sides like a fresh salad or some zoodles. For more delectable options, check out my Garlic Chicken Meatballs or Decadent Creme Casserole for even more family favorites!

Make Ahead Options

This Low Carb Meatball Casserole is perfect for busy home cooks looking to save time without sacrificing flavor! You can prepare the meatballs and assemble the casserole up to 24 hours in advance. Simply roll the meatballs and place them in the casserole dish, then cover tightly and refrigerate. This allows the flavors to meld beautifully. When you’re ready to serve, bake the casserole straight from the fridge, adding an extra 5-10 minutes to the cooking time to ensure everything heats through. By prepping ahead, you’ll enjoy a hassle-free weeknight dinner that’s just as delicious as if you made it fresh!

What to Serve with Meatball Casserole?

Create a delightful dining experience by pairing your casserole with complementary sides that enhance the cozy, savory flavors.

  • Zoodles (Zucchini Noodles): Light and refreshing, zoodles keep your meal low carb while adding a fun twist to traditional pasta. They soak up the rich marinara sauce beautifully!

  • Garlic Bread: Crunchy, buttery garlic bread is the ultimate accompaniment, perfect for sopping up every delicious drop of sauce. It adds a satisfying crunch to your meal.

  • Caesar Salad: Crisp romaine, tangy dressing, and crunchy croutons create a balanced contrast to the warm and cheesy casserole, enriching your dining experience.

  • Spaghetti Squash: A nutritious alternative to pasta, spaghetti squash has a subtle sweetness and is a wonderful vehicle for the flavorful meatballs and marinara sauce.

  • Roasted Vegetables: Oven-roasted veggies like bell peppers, broccoli, and carrots provide a deliciously caramelized flavor and a crunchy texture to round out your meal.

  • Red Wine: A glass of bold red wine enhances the rich flavors of Meatball Casserole, making for a cozy, indulgent dining experience.

  • Fresh Fruit Salad: For dessert, a light fruit salad adds a refreshing touch and the perfect sweetness to cap off a hearty meal.

  • Chocolate Mousse: End your dinner on a high note with indulgent chocolate mousse. Its creamy texture offers a delightful contrast after the comforting casserole.

With these pairings, your Meatball Casserole will shine as the star of the meal, leaving everyone feeling satisfied and happy!

How to Store and Freeze Meatball Casserole

Fridge: Store leftover Meatball Casserole in an airtight container for up to 3-4 days. Reheat in the oven or microwave until warmed through.

Freezer: For longer storage, freeze the assembled casserole before baking. Wrap tightly in plastic wrap and aluminum foil for up to 2 months.

Thawing: To thaw, move the frozen casserole to the fridge overnight. Bake at 350°F (175°C) until heated through, approximately 30-40 minutes.

Reheating: Reheat individual portions in the microwave for 1-2 minutes or bake in the oven until bubbly and hot.

Meatball Casserole Recipe FAQs

How do I select the right ingredients for my meatballs?
Absolutely! When choosing your ground turkey, look for a lean option with a good balance of meat to fat. Fresh ground meat will have a bright color without any dark spots or unpleasant smell. For the zucchini, select firm ones that feel heavy for their size, and avoid any with wrinkled skin or blemishes.

How can I store leftover Meatball Casserole?
Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. Make sure it’s completely cooled before sealing to help prevent moisture buildup. When you’re ready to enjoy it again, simply reheat in the oven or microwave until warmed through.

Can I freeze Meatball Casserole for future meals?
Yes, you can freeze it! To maintain quality, bake the meatballs fully before assembling the casserole. Once assembled, wrap it tightly in plastic wrap and aluminum foil, and freeze for up to 2 months. When you’re ready to eat, thaw it in the fridge overnight, then bake at 350°F (175°C) for about 30-40 minutes or until heated thoroughly.

What’s the best way to thaw and reheat the casserole?
To thaw your Meatball Casserole, move it from the freezer to the refrigerator the night before serving. For reheating, bake it at 350°F (175°C) for 30-40 minutes until it’s bubbly and hot in the center. For individual portions, you can microwave for 1-2 minutes, or bake until warmed thoroughly—enjoy that melted cheese goodness!

Are there any dietary considerations I should be aware of?
Very! This recipe is gluten-free and suitable for low-carb diets, making it perfect for keto-friendly meals. However, if you have specific allergies, check the ingredients in your Italian sausage and marinara sauce, as additives can vary. For those with dairy sensitivities, consider vegan cheese alternatives or simply reduce the cheese on top.

What can I do if my meatballs are dry?
If you find your meatballs turning out dry, there are a few troubleshooting steps you can take. First, ensure you’re not overcooking; meatballs should be baked just until cooked through. You can also add a bit more moisture to the mixture—try incorporating a spoonful of marinara or an extra egg to help them retain moisture during baking. Always remember that ground meat can differ in moisture content, so adjust as needed!

Meatball Casserole

Meatball Casserole: A Cozy Low Carb Family Favorite

This Low Carb Meatball Casserole harmonizes juicy meatballs with gooey cheese and rich sauce, making it a perfect keto dinner for families.
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings: 6 servings
Course: Dinner
Cuisine: Italian
Calories: 350

Ingredients
  

For the Meatballs
  • 1 lb Ground Turkey Can substitute with ground chicken or beef.
  • 1 link Italian Sausage Optional; turkey sausage for lighter flavor.
  • 1 cup Shredded Zucchini Can replace with chopped spinach.
  • 1 large Egg A flax egg can be used for a vegan option.
  • 2 tbsp Dried Minced Onion Fresh can enhance taste but may require adjustments.
  • 1 tsp Dried Garlic Powder Fresh garlic is an alternative.
  • 1 tsp Dried Basil Substitute with fresh for better flavor.
  • 1 tsp Salt Adjust to dietary needs.
For the Sauce and Topping
  • 2 cups Marinara Sauce Use a no-sugar-added variety for health.
  • 1 cup Shredded Mozzarella Can swap with cheddar for a different flavor.
  • 1/2 cup Grated Parmesan Necessary for traditional taste; pecorino is an alternative.
  • 1 cup Shredded Cheese Blend (Mozzarella and Provolone) Mix any preferred melting cheeses.

Equipment

  • 9x13 casserole dish

Method
 

Instructions
  1. Preheat your oven to 400°F (200°C) and coat a 9x13 casserole dish with cooking spray.
  2. In a large mixing bowl, combine the ground turkey, Italian sausage, shredded zucchini, egg, dried minced onion, garlic powder, dried basil, and salt. Mix well until cohesive.
  3. Roll the meat mixture into approximately 24 meatballs and place them in the prepared casserole dish.
  4. Bake the meatballs in the preheated oven for 30 minutes, checking for an internal temperature of 150-155°F.
  5. Remove from the oven, drain excess liquid, and pour marinara sauce over the meatballs. Sprinkle with shredded mozzarella and grated Parmesan.
  6. Return to the oven and bake for an additional 10-15 minutes until the cheese is bubbly and golden.
  7. Optionally, broil the casserole for 2-3 minutes for a crisp top, watching closely to avoid burning.

Nutrition

Serving: 1servingCalories: 350kcalCarbohydrates: 10gProtein: 30gFat: 20gSaturated Fat: 9gPolyunsaturated Fat: 1gMonounsaturated Fat: 8gCholesterol: 100mgSodium: 800mgPotassium: 500mgFiber: 2gSugar: 4gVitamin A: 300IUVitamin C: 5mgCalcium: 250mgIron: 3mg

Notes

For best results, prepare meatballs in advance and refrigerate or freeze before baking. High-quality marinara enhances flavor immensely.

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