Instructions

1. Preheat the oven to 350° F. Combine the softened butter with peanut butter and beat until completely smooth; scrape down the bowl occasionally. Next add the brown and granulated sugar. Beat on medium speed until well combined, 2-3 minutes.
2. Next add the eggs and vanilla extract and continue beating until well incorporated.
3. In a separate bowl, combine the remaining dry ingredients, except the chocolate chips and M&Ms. Stir to combine and slowly add the dry ingredients into the dough, mixing on low speed until dough starts to form. Before the dough thickens, add the chocolate chips and M&Ms. Beat a couple of times just until the flour incorporates.
4. Line a baking sheet with parchment paper or a silicone baking sheet. Scoop the dough using a large cookie scoop and place on a sheet pan, 2 inches apart. Place additional M&Ms and chocolate chips on top of the cookies if desired.
5. Bake for 11-13 minutes. The center of the cookie should be slightly under baked but not too gooey. Allow to cool on the baking sheet for 5-10 minutes before transferring to a wire rack to cool. Store in an airtight container.