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+ servings
5 from 7 votes
Overhead picture of peanut butter and jelly blondies on a wooden cutting board
Peanut Butter and Jelly Blondies
Prep Time
15 mins
Cook Time
25 mins
Total Time
40 mins
These Peanut Butter and Jelly Blondies will be a hit with kids of all ages! And you can mix them up in less than 10 minutes, with just one bowl and no mixer!
Course: Bars, Cookeis, Dessert
Cuisine: American
Keyword: Blondies, Peanut Butter and Jelly Blondies, Peanut Butter Blondies
Servings: 16 bars
Calories: 218 kcal
Author: Chris Scheuer
For the blondies:
  • ½ cup butter
  • ¼ cup creamy peanut butter
  • 1 cup light brown sugar firmly packed
  • 1 large egg
  • 1 teaspoon vanilla extract
  • ½ teaspoon baking powder
  • ¼ teaspoon kosher salt
  • 1 ¼ cups all-purpose flour
For the topping:
  • cup creamy peanut butter
  • cup jam or jelly use your favorite flavor
  1. With one oven rack set about halfway up, preheat oven to 350˚Spray an 8x8-inch baking pan with baking spray and line with foil so that two ends of the foil are extending over the edges of the pan. Spray foil lightly. Set aside.
  2. Combine butter and peanut butter in a medium-size microwave-safe bowl. Cook on high power for 45-60 seconds or until butter is just melted. Set aside to cool for a few minutes while you get the remaining ingredients out.
  3. Add brown sugar to melted butter mixture and stir to combine then add egg, vanilla, baking powder and salt and stir well.
  4. Sprinkle flour over the top and stir just until all flour is incorporated. (Don’t over mix.) Transfer mixture to prepared pan and spread to an even layer. The batter will be thick.

  5. In separate small microwave-safe bowls or cups, microwave 1/3 cup peanut butter and 1/3 cup jelly or jam for 10-15 seconds, just until warm. (You don’t want these to be liquid, just slightly warm so don’t microwave more than 15 seconds.)
  6. Drop the slightly warmed peanut butter and jelly in small spoonfuls across the top of the blondie batter. Leave some of the blondie batter showing. With the tip of a small knife, swirl the peanut butter and jelly together just a bit. Don’t swirl too much, you want some nice swirls but you don’t want a complete blending of the peanut butter and jelly. Also just swirl the peanut butter and jelly layer, don’t dip the knife down into the blondie batter.
  7. Bake in preheated oven for 30-35 minutes or until the center is set (it will no longer jiggle when the pan is gently shaken​).
  8. Allow to cool completely before removing from the pan (with the foil “handles”) and cutting. Enjoy!
Recipe Notes

See Café Tips above in post for more detailed instructions and tips.

Adapted from Bake from Scratch

Nutrition Facts
Peanut Butter and Jelly Blondies
Amount Per Serving
Calories 218 Calories from Fat 99
% Daily Value*
Fat 11g17%
Saturated Fat 5g31%
Cholesterol 25mg8%
Sodium 141mg6%
Potassium 112mg3%
Carbohydrates 28g9%
Fiber 1g4%
Sugar 18g20%
Protein 4g8%
Vitamin A 190IU4%
Vitamin C 0.7mg1%
Calcium 27mg3%
Iron 0.8mg4%
* Percent Daily Values are based on a 2000 calorie diet.