Loaded Peanut Butter Reese's Bars
Prep time
Cook time
Total time
The most delicious, soft and chewy Peanut Butter Bars loaded to the brim with Reese's Peanut Butter Cups, chocolate pieces, and M&Ms!
Recipe type: Cookie Bar
Cuisine: Dessert
Serves: 35
  • 1 cup butter, softened
  • 1 cup creamy peanut butter
  • 1 cup white sugar, + 2 tbsp divided
  • 1 cup brown sugar
  • 3 eggs
  • 2 tsp vanilla
  • ½ tsp coarse sea salt (regular salt is fine if you don't have coarse)
  • 1½ tsp baking soda
  • 3 cup all-purpose flour
  • 2 cup quick oats
  • 1 cup milk chocolate chips
  • ½ cup mini M&Ms
  • ½ cup semi-sweet chocolate chunks, chips, or mini chips
  • 1 cup chopped Reese's Peanut Butter cups (Approx. 10 fun-size cups)
  1. Preheat oven to 350 degrees.
  2. Lightly grease a large 12x17 cookie sheet pan. (I use the butter wrapper for this.)
  3. In a mixer or with a hand mixer, combine butter, peanut butter, 1 cup of white sugar, and brown sugar. Cream together for 2-3 minutes.
  4. Add eggs and vanilla. Continue mixing until well combined, about 30-45 seconds.
  5. Next, add salt and baking soda. Then mixing at a low speed, slowly add flour and oats a half cup at a time. Mix until well combined.
  6. Add chocolate chips, M&Ms, Chocolate Chunks, and Reese's Cup pieces last. Mix until just combined. (I like to save a few of each type of chocolate to arrange on top once the dough is pressed in the pan to make it look pretty.)
  7. The dough will be thick. Evenly distribute it by the spoonful onto a greased cookie sheet pan. In order to spread it evenly, you may need to spray your hand with cooking spray and press it down carefully until it is evenly distributed in the pan.
  8. Once dough is evenly spread in the pan, sprinkle the top with 2 tbsp of granulated white sugar and decorate the top, if desired, with reserved pieces of chocolate and peanut butter cups.
  9. Bake in a 350-degree oven for 18-22 minutes.
  10. You do not want to overbake. The bars will be barely starting to brown on the edges. You can test the center with a toothpick if desired. Remember bars will continue to cook a little as they cool in the pan. In my oven, it takes exactly 19 minutes.
  11. Let cool completely before cutting.
  12. Enjoy
Recipe by Real Life Dinner at https://reallifedinner.com/loaded-peanut-butter-reeses-bars/