In a mixing bowl, sift the flour, baking soda, and salt together. Set aside.
2 ¼ cup All-purpose flour, 1 teaspoon Salt, 1 teaspoon Baking soda
Using a mixer, beat the butter, brown sugar, and sugar together until light and fluffy on high for 2 minutes. Add in vanilla and peanut butter. Mix until combined. Add in eggs and mix on high for 1 minute. Scrape bowl to make sure it is all mixed together.
1 cup Unsalted butter, 1 ¼ cup Brown sugar, ¾ cup White granulated sugar, 1 cup Peanut butter, 2 teaspoon Pure vanilla extract, 2 Large eggs
Add in dry ingredients and mix on low until combined. Add in mini chocolate chips and chopped mini Reese's. I cut each Reese's into thirds. Cover and chill for 2 ½ hours.
1 cup Mini chocolate chips, 1 cup Mini Reese's peanut butter cups
Preheat oven to 350°F. Line two large cookie sheets with parchment paper. Use a 3 oz cookie scoop (large ice cream scoop) to scoop dough. Place 6 cookies per cookie sheet. Place the rest of the dough back in the fridge until you need it for the next batch.
Bake for 14-16 minutes. The cookies should be lightly golden brown. Add extra mini peanut butter cups and mini chocolate chips to tops of cookies. Let sit for 5 minutes before transferring to a cooling rack.