Preheat your oven to 350°F. Line two baking sheets with parchment paper.

In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.

In a large mixing bowl, cream together the softened butter, granulated sugar, brown sugar, and vanilla extract until light and fluffy.

Add the eggs one at a time, mixing well after each addition.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Fold in the chocolate chips, butterscotch chips, nuts, coconut, pretzel pieces, and M&M's until evenly distributed.

Using a cookie scoop or tablespoon, drop dough onto the prepared baking sheets, spacing them about 2 inches apart.

Bake for 10-12 minutes or until the edges are golden brown. The centers may look slightly underbaked; they will firm up as they cool.

Let the cookies cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.