In a bowl, whisk together the all-purpose flour, rolled oats, baking soda, and salt until well combined. Set aside.
1/2 cup All-purpose flour (60 grams), 1/2 cup Rolled oats (45 grams), 1/2 teaspoon Baking soda, 1/4 teaspooon Salt
Using a hand mixer or a stand mixer, cream the butter, brown sugar, and granulated sugar together for 3 to 5 minutes until light and fluffy.
1/3 cup Unsalted butter (76 grams),, 1/3 cup Brown sugar (67 grams), 2 tablespoons Granulated sugar (25 grams)
Mix in the peanut butter, egg yolk, and vanilla extract until smooth.
2 tablespoons Creamy peanut butter (36 grams), 1 Egg yolk,, 1/2 teaspoon Vanilla extract
Gradually add the dry ingredients and mix until just combined. Then, fold in the mini chocolate chips, pecans and M&M’s.
1/3 cup Regular M&M's, 2 tablespoons Semi-sweet mini chocolate chips, 1/4 cup Chopped pecans
Scoop the dough into 8 evenly sized cookie dough balls. Refrigerate for 30 minutes to help the cookies hold their shape while baking.
Preheat your oven to 350°F. Line a baking sheet with parchment paper, then place the chilled cookie dough balls onto the sheet. Bake for 10 to 12 minutes or until the edges are golden brown. Let the cookies cool slightly before eating!