Add the creamy peanut butter, light brown sugar, and sugar to a mixer and beat until smooth.
2 Cups Peanut Butter, 1 1/2 Cup Light Brown Sugar, 1/4 Cup Sugar
Add the vanilla and eggs and beat until smooth.
2 teaspoons Vanilla, 4 Eggs
Pour in both kinds of oats, baking soda and salt and mix well until combined.
1 1/4 Cups Old Fashioned Oats, 1/4 Cup Quick Oats, 1 teaspoon Baking Soda, 1 teaspoon Salt
Stir in the mini M&Ms and mini chocolate chips and mix well with a wooden spoon.
1 Cup Mini M&M's, 1 Cup Semisweet Chocolate Chips
Line a large baking sheet with parchment paper and scoop the dough into balls on the cookie sheet. This is only for refrigeration so they can be close together. Cover the baking sheet with with plastic wrap and refrigerate for at least 2 hours.
Once the dough is chilled, preheat the oven to 350°F and line another baking sheet with parchment paper.
Transfer the cookie dough, 2 per row to the baking sheet. Bake for 8-10 minutes. Allow to cool completely before removing to a plate.