Bring a large pot of salted water to a boil. Add bowtie pasta and cook for 8-10 minutes until al dente. Drain and rinse under cold water.

In a large mixing bowl, combine cooled pasta with red onion, Canadian bacon, and frozen peas, stirring gently.

In a separate bowl, whisk together sour cream and French dressing until smooth and season with salt and pepper.

Pour the dressing over the pasta mixture and stir gently to coat.

Fold in shredded cheddar cheese carefully.

Cover and chill in the refrigerator for at least 2 hours before serving.