Best Peanut Butter Bars Recipe

User Reviews

5.0

15 reviews
Excellent
  • Prep Time

    15 mins

  • Cook Time

    15 mins

  • Total Time

    25 mins

  • Servings

    24 bars

  • Calories

    422 kcal

  • Course

    Dessert

  • Cuisine

    American

Best Peanut Butter Bars Recipe

These peanut butter bars have a soft, chewy peanut butter oatmeal cookie base, a chocolate layer, and a super creamy peanut butter butter cream on top. They are the best peanut butter bars ever!

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Ingredients

Servings

Cookie Layer:

  • ¾ cups butter softened but not melted
  • ¾ cups granulated sugar
  • ¾ cups brown sugar
  • ¾ cups peanut butter smooth or crunchy, depending of preference*
  • 2 eggs at room temperature
  • 2 tsp vanilla extract
  • 1 ½ cups flour
  • ½ tsp salt
  • ¾ tsp baking soda
  • 1 ½ cups rolled oats

Chocolate Layer:

  • 1 ½ cups semi-sweet chocolate chips

Frosting Layer:

  • 1 cup powdered sugar
  • ¾ cup smooth peanut butter
  • ¾ cup butter softened
  • 1 tsp vanilla extract
  • ¼ cup milk
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Instructions

Cookie Layer:

  1. Preheat oven to 375 degrees f. Grease a 12×17 in cookie sheet or jelly roll pan, or use parchment paper to line the pan. Set aside. 
  2. Wet ingredients: In a large mixing bowl, cream together on medium speed (using a hand or stand mixer) butter, sugars, peanut butter, eggs, and vanilla until light and fluffy. 
  3. Dry ingredients: Sift flour, salt, and baking soda into the creamed mixture. Mix well to combine, scraping down the sides of the bowl once halfway through. 
  4. Add oats. Mix together until combined (cookie dough texture). Press the dough onto the prepared baking pan sheet until it forms a uniform layer on the bottom of the pan. 
  5. Bake at 375 F for about 10 minutes until slightly golden on top. Turn off the oven. 

Chocolate Layer:

  1. Sprinkle the chocolate chips on top of the cookie layer and place back in the warm oven (that is turned OFF) for 2 minutes. 
  2. Take out the cookie sheet and spread the warm chocolate all over the cookie with a spatula or knife- creating a smooth thin layer. 
  3. Place in fridge to let chocolate layer harden a bit. 

Peanut Butter Frosting Layer:

  1. In a medium mixing bowl cream together (using hand or stand mixer) the powdered sugar, peanut butter, butter, vanilla and milk. 
  2. The end result should be a uniform creamy peanut butter buttercream. 
  3. With a spatula gently spread the frosting over the chocolate layer after the bars and chocolate have cooled completely. 

Notes

  • Storage:
  • Storage: Keep your bars covered in an airtight container on the counter for 5-7 days. Some rimmed baking sheets come with a plastic lid that is perfect for just this sort of occasion. Or, you can just cover them with plastic wrap once the frosting has dried and firmed up a bit. You can also keep the bars in the fridge or freezer and serve them chilled, if you prefer.
  • Freezing: These freeze great for 2-3 months. For easier storage, I recommend slicing and separating the bars, then freezing them individually for an hour to set the frosting. Then you can transfer them to a freezer-safe container and stack them so they don't take up as much space in the freezer.

Nutrition Information

Show Details
Calories 422kcal (21%) Carbohydrates 44g (15%) Protein 8g (16%) Fat 25g (38%) Saturated Fat 12g (60%) Polyunsaturated Fat 3g Monounsaturated Fat 9g Trans Fat 0.5g Cholesterol 31mg (10%) Sodium 252mg (11%) Potassium 238mg (7%) Fiber 3g (12%) Sugar 24g (48%) Vitamin A 364IU (7%) Calcium 36mg (4%) Iron 2mg (11%)

Nutrition Facts

Serving: 24bars

Amount Per Serving

Calories 422 kcal

% Daily Value*

Calories 422kcal 21%
Carbohydrates 44g 15%
Protein 8g 16%
Fat 25g 38%
Saturated Fat 12g 60%
Polyunsaturated Fat 3g 18%
Monounsaturated Fat 9g 45%
Trans Fat 0.5g 25%
Cholesterol 31mg 10%
Sodium 252mg 11%
Potassium 238mg 5%
Fiber 3g 12%
Sugar 24g 48%
Vitamin A 364IU 7%
Calcium 36mg 4%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.

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Overall Rating

5.0

15 reviews
Excellent

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