Preheat oven to 350 degrees. Line a baking sheet with parchment paper.

Cream the butter and both sugars together in a stand mixer.

Add the eggs and vanilla.

Combine the flour, baking powder, baking soda, and salt in a separate bowl.

Add the flour mixture to the wet ingredients, a little at a time, and mix.

Gentle stir in M&Ms and sprinkles.

Place heaping tablespoons of dough on the baking pan. Bake for about 10 minutes, or until the edges of the cookies are set.