A stack of peanut butter bars with parchment paper between each bar
Print Recipe
0 from 0 votes

Reese's Peanut Butter Oatmeal Bars

Reese's Peanut Butter Oatmeal Bars have mini Reese cups right inside along with some peanut butter chips for a burst of peanut butter taste in every bite. Oatmeal makes them more substantial for shipping but doesn’t weigh them down. A fabulous teat if you’re a peanut butter fan. 
Prep Time20 mins
Cook Time30 mins
Course: Dessert
Cuisine: American
Keyword: peanut butter, Reese's
Servings: 24
Calories: 313kcal


  • sticks unsalted butter room temp
  • 2 cups brown sugar
  • ½ cups creamy peanut butter
  • 2 eggs room temp
  • 1 tbsp. vanilla
  • 2 cups flour
  • 1 cup old fashioned oatmeal
  • teaspoons baking powder
  • ¼ teaspoon salt
  • 1 cup Reese's peanut butter chips
  • 2 cups Reese's miniatures chopped or Reese's minis


  • Preheat oven to 350º. Line a 9x13 inch baking dish with parchment paper.
  • Cream butter and sugar together in the bowl of an electric mixer. Add peanut butter and continue mixing. Add eggs one at a time, mixing well after each egg. Add in vanilla.
  • In a separate bowl, combine flour, oats, baking powder, and salt. Add the flour mixture to the butter mixture, mix until well combined. Stir in the peanut butter chips.
  • Spread 2/3 of the dough on the bottom of the pan. Top with Reese's minis or chopped miniatures. Drop the remaining dough on top by spoonfuls and spread over the top. It doesn't have to be perfect and it won't cover all the Reese's.
  • Bake for about 30 minutes. Let cool completely and then refrigerate before cut into bars.


Calories: 313kcal | Carbohydrates: 45g | Protein: 7g | Fat: 13g | Saturated Fat: 5g | Cholesterol: 17mg | Sodium: 159mg | Potassium: 205mg | Fiber: 2g | Sugar: 32g | Vitamin A: 33IU | Vitamin C: 1mg | Calcium: 58mg | Iron: 1mg