Peanut Butter Blondies Recipe With Reese’s Cups

by Alli

Peanut Butter lovers rejoice! Indulge your taste buds with delectable chewy peanut butter blondies. With a rich, buttery texture, these sweet treats offer a delightful balance of nutty goodness and irresistible sweetness.

If you’re a fan of peanut butter and chocolate, these Peanut Butter Blondies With Reese’s Cups are sure to satisfy your sweet tooth. 

These easy-to-make blondies begin with a yellow cake mix! The batter comes together quickly and easily so this sweet treat makes a great dessert option for busy weeknights or last-minute get-togethers.

Ingredients You’ll Need To Make Peanut Butter Blondies With Reese’s Cups

You can find the complete printable recipe card at the end of this post.

  • Yellow cake mix – use your favorite brand! 
  • salted butter – If you use unsalted butter, add a pinch of salt to the recipe. 
  • large eggs, room temperature
  • crunchy peanut butter – You can use creamy peanut butter if desired. 
  • 2 cups mini peanut butter cups, roughly chopped and divided – Reese’s Pieces or Peanut Butter M&Ms are fun replacements!

Ingredients to Make Peanut Butter Blondies

Serving Suggestions

Peanut Butter Blondies With Reese’s Cups are a delicious treat. Here are a few serving suggestions to try:

1. Warm and Topped with Ice Cream

For a decadent dessert, warm up a peanut butter blondie and top it with a scoop of vanilla ice cream. The warm and gooey blondie pairs perfectly with the cool and creamy ice cream. This is my favorite way to enjoy these blondies! 

For an extra indulgent treat, drizzle some caramel or chocolate sauce on top.

2. Cut Into Bite-Sized Pieces

If you’re serving a crowd, cut the peanut butter blondies into smaller bars. This makes them easy to grab and eat and allows people to try a blondie bite without committing to a larger bar. 

3. Paired with Coffee, Tea, or A Tall Glass of Cold Milk

For me, milk is definitely the way to go when eating a delicious peanut butter and chocolate treat.

Peanut butter blondies also make a great accompaniment to a warm cup of coffee or tea. The rich, nutty flavor of the blondies pairs well with the bitterness of coffee or the sweetness of tea.

Enjoy these blondies for dessert, as an afternoon snack, or as a morning treat.

Storage and Shelf Life

Store cooled Peanut Butter Blondies with Reese’s Cups in an airtight container at room temperature. They will remain fresh for up to three days. You can store the blondies in the refrigerator for up to a week. 

Make sure the container is large enough to hold all the blondies without them sticking together or getting crushed. If you need to stack them, place a piece of parchment in between so they don’t stick together. 

For longer storage, the blondies can be frozen. Wrap them tightly in plastic wrap and then place them in an airtight container or freezer bag. They will keep in the freezer for up to three months.

When ready to enjoy, simply thaw the blondies at room temperature for a few hours before serving. They can also be warmed up in the microwave for a few seconds to give them a fresh-from-the-oven taste.

stacked peanut butter blondies with a glass of milk

Steps For Making Peanut Butter Blondies Recipe

Preheat the oven to 350 degrees Fahrenheit and line a 9×13-inch baking dish with parchment paper or nonstick cooking spray.

In a large mixing bowl, add the cake mix and pour in the melted butter and egg, stirring until smooth and well combined. 

Step 1 when making peanut butter blondies - add the eggs, butter and cake mix together and stir until smooth

Add peanut butter and mix thoroughly.

peanut butter added to batter in glass bowl to make peanut butter blondies

Gently fold 1 ½ cups of the mini peanut butter cups into the peanut butter mixture, leaving the remaining ½ cup aside. Be sure to distribute your peanut butter cup pieces in the batter evenly.

Chopped Mini Reese's Cups being stirred into blonder batter in glass bowl

Spread batter evenly into your dish. The batter will be thick.

blondie batter in pan ready to be baked

Bake blondies for 20-25 minutes. The blondies will be golden brown. They are done when a toothpick comes out clean when inserted near the center. 

Baked Peanut Butter Blondies in baking pan

Let blondies cool slightly and sprinkle the remaining ½ cup peanut butter cups over the top. Press slightly. 

Chopped Mini Reese's Cups on freshly baked blondies

Set the blondies aside to cool completely on a wire rack for about an hour. Cut into squares and serve.

Peanut Butter Blondies With Reese's Cups cut into squares and ready to serve

The next time you want a sweet treat, these blondies are sure to hit the spot. 

Try More of my Delicious Peanut Butter Desserts Below!

Yield: 18 squares

Peanut Butter Blondies

peanut butter blondies stacked on a white serving plate

Peanut Butter Blondies have a rich, buttery texture. These sweet treats offer a delightful balance of nutty goodness and irresistible sweetness. 

Prep Time 5 minutes
Cook Time 20 minutes
Total Time 25 minutes

Ingredients

  • 1 (15.25 ounce) box yellow cake mix
  • ½ cup (1 stick) salted butter, melted
  • 2 large eggs, room temperature
  • 1 cup crunchy peanut butter
  • 2 cups Reese's mini peanut butter cups, roughly chopped and divided

Instructions

  1. Preheat the oven to 350 degrees Fahrenheit and line a 9x13-inch baking dish with parchment paper or nonstick cooking spray. 
  2. In a large bowl, add cake mix and pour in the melted butter and egg, stirring well with a rubber spatula until smooth. 
  3. Add in the peanut butter and mix thoroughly. 
  4. Gently fold in 1 ½ cups of the mini peanut butter cups, leaving the remaining ½ cup aside. Be sure to distribute the peanut butter cup pieces in the batter evenly. 
  5. Spread the batter evenly into your dish and place in the preheated oven to cook. The batter will be thick.
  6. Cook blondies for 20-25 minutes or until a toothpick comes out clean when inserted near the center.
  7. Let blondies cool slightly and sprinkle the remaining ½ cup peanut butter cups over the top. You can press them slightly to get them to adhere. 
  8. Set the blondies aside to cool completely for about one hour. 
  9. Cut into squares and serve.

Notes

You can drizzle the cooled blondies with melted peanut butter if desired. Microwave 1/2 cup smooth peanut butter for 30 seconds. Stir. Use a fork or squeeze bottle to drizzle over the blondies.

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Nutrition Information

Yield

18

Serving Size

1

Amount Per Serving Calories 335Total Fat 17gSaturated Fat 5gTrans Fat 0gUnsaturated Fat 11gCholesterol 23mgSodium 383mgCarbohydrates 41gFiber 2gSugar 26gProtein 8g

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