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Stack of brownies with swirled peanut butter on top, placed on parchment paper.

Fudgy Peanut Butter Brownies Recipe

Author: Jessica Haggard
Why have brownies when you can have peanut butter brownies? Rich, fudgy chocolate meets creamy peanut butter swirls for a treat that’s indulgent as it’s easy to make. Just mix, swirl, and bake, and you get a dessert that’s crisp on the outside, fudgy on the inside, with a rich flavor but not overly sweet. Just the right amount of indulgent for all your sweet cravings!
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Desserts
Cuisine American
Servings 9 brownies
Calories 300 kcal

Ingredients
 
 

  • 1 box peanut butter brownie mix any brand
  • 2-4 tbsp peanut butter pouch was included with my cake box
  • 1 whole egg
  • 2 tbsp water
  • 2 tbsp butter melted or vegetable oil

Instructions
 

  • Preheat the oven to 320 °F. Line an 8x8-inch square baking dish with parchment paper.
  • Use an electric mixer or whisk to mix the brownie mix with water, egg and oil. Blend until smooth. Pour the mixture into the baking dish.
  • Drizzle peanut butter over the brownie batter and swirl it in with the tip of a butter knife. Gently drag the knife across the top of the batter to make a pretty swirl pattern.
  • Bake for 15 to 18 minutes or until a toothpick inserted into the center comes out clean.
  • Let cool on a wire cooling rack before slicing into squares. Serve warm or at room temperature.

Notes

  • Room temperature eggs will mix more smoothly into the batter than cold eggs. Take an egg out of your fridge ahead of time or quickly warm it in a bowl of warm water to bring it to room temperature.
  • Don’t overmix the batter to prevent dense, tough brownies. Stir just until all ingredients are combined, especially after adding the dry mix. This keeps your brownies soft and fudgy.
  • Get creative with your peanut butter swirls! Use a toothpick to create unique patterns on the surface in more detail.
  • Allow at least 15 minutes for the brownies to cool and set before cutting and serving. If you can make clean slices, that means they’re ready.
  • Run a knife under hot water to heat it up then use it to cut into the brownies, wiping it clean in between cuts.
  • These brownies taste most fantastic fresh out of the oven when they’re warm and gooey.
Serve: Enjoy plain or serve with a scoop of vanilla ice cream as a snack or your choice of toppings for dessert. Enjoy for breakfast crumbled on top of some Greek yogurt. 
Store: Place leftover peanut butter brownies in an airtight container and keep in the refrigerator for up to 4 days, or in the freezer for up to 1 month. Enjoy them chilled, at room temperature, or warm. If you prefer warm, pop back in the oven and warm until heated through.

Nutrition

Serving: 1brownieCalories: 300kcalCarbohydrates: 45gProtein: 4gFat: 12gSaturated Fat: 4gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.1gCholesterol: 25mgSodium: 208mgPotassium: 29mgFiber: 0.2gSugar: 29gVitamin A: 104IUCalcium: 5mgIron: 2mg
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