Reese's Pieces Peanut Butter Oatmeal Cookies are made with the peanut butter lover in mind. Heavily loaded with peanut flavour by means of peanut butter, chopped peanuts, and a copious amount of Reese's Pieces, this cookie is sure to please the peanut butter kid in all of us!
Preheat oven to 350 degrees F. Line a baking sheet with parchment paper or a silicon baking mat. Set aside.
In a large mixing bowl, beat together the butter, granulated sugar, and brown sugar until well combined.
Once completely incorporated, add the egg, vanilla, and peanut butter. Mix well to combine.
Next, add the flour, salt, and baking soda. Mix well.
Stir in the oatmeal, Reese's Pieces, and chopped peanuts, if using.
Roll the cookie dough into golf-sized balls and place them onto a lined baking sheet. Position the dough evenly on your cookie sheet. Be sure to leave room for growth.
Bake cookies for 13 minutes.
Allow the cookie to cool for two minutes on the baking sheet before transferring to a cooling rack for the remainder of the cooling process.