Peanut Butter Bars with Chocolate Frosting

People, listen to me.  These chocolate peanut butter bars are amazing.  My son, a connoisseur of such things, says these are the best!Chocolate peanut butter bars on drying rack.

I was in the mood to bake, and these chocolate peanut butter bars didn’t disappoint!

It’s been awhile since I’ve creamed together butter and sugar, measured out flour, and lined baking pans with parchment. Too long, in fact.

I’ve been cooking up a storm, but haven’t had a lot of time for baking. So sad, right?

Chocolate frosted peanut butter bar recipe. Bars cooling on counter.

Not too worry, though. My mixing bowls are currently soaking away in the sink, measuring cups stacked here and there, and the flour is everywhere. I don’t care, though. Baking makes me happy and these peanut butter bars don’t hurt either.

chocolate peanut butter bars cooling down

Imagine peanut butter cookie dough smeared in a baking dish and then baked to perfection. Delicious, I’m sure, but why stop there? Pour on the gooey, fudgy chocolate frosting and all your dreams will come true.



Peanut Butter Bars with Chocolate Frosting

Prep Time
10 mins
Cook Time
35 mins
Total Time
45 mins
Servings: 8 bars
Calories: 469 kcal

If you love peanut butter and chocolate, these are a must make!


Peanut Butter Bars:
  • 6 tablespoons butter softened
  • 1/2 cup peanut butter
  • 1 cup granulated sugar
  • 1/4 cup light brown sugar packed
  • 2 largee eggs
  • 1 teaspoon vanilla
  • 1 cup flour
  • 1/4 teaspoon kosher salt
  • 1 teaspoon baking powder
For the chocolate frosting:
  • 1/2 cup white sugar
  • 3 tablespoons butter
  • 3 tablespoons milk
  • 1/4 cup chocolate chips milk chocolate or semi-sweet


For the Peanut Butter Bars:
  1. Preheat oven to 350 degrees and line a 9x9 baking dish with parchment paper.
  2. Cream the butter and peanut butter together. Add in the sugar and beat until well combined. Add the eggs, one at a time, mixing well after each addition. Stir in the vanilla.
  3. In a small bowl, whisk together the flour, salt, and baking powder. Mix in to the peanut butter mixture until well combined.
  4. Spread into the prepared baking dish.
  5. Bake for 30 minutes or until a toothpick inserted near the center comes out clean. Cool completely before frosting.
For the chocolate frosting:
  1. Add sugar, butter, and milk to a small saucepan over medium heat and bring to a boil. Boil for exactly 60 seconds and remove from heat. Stir in chocolate chips and continue stirring until the chocolate has melted.
  2. Immediately pour over the peanut butter bars. Allow to cool for 30 minutes before cutting.

Nutrition Facts
Peanut Butter Bars with Chocolate Frosting
Amount Per Serving (1 bar)
Calories 469 Calories from Fat 198
% Daily Value*
Fat 22g34%
Saturated Fat 10g63%
Cholesterol 36mg12%
Sodium 268mg12%
Potassium 188mg5%
Carbohydrates 63g21%
Fiber 1g4%
Sugar 49g54%
Protein 6g12%
Vitamin A 415IU8%
Calcium 53mg5%
Iron 1.2mg7%
* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. I am not a certified nutritionist and any nutritional information shared on should only be used as a general guideline.

adapted from Bake at 350