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Close-up of sliced peanut butter brownies with caramel swirl on parchment paper.

Chewy Peanut Butter Brownies from a Mix Recipe

Author: Jessica Haggard
Extra peanut butter gets swirled through these peanut butter brownies from mix, marbled into the batter instead of blended smooth. The edges turn crisp while the center stays soft and fudgy, with almost no cleanup after.
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Desserts
Cuisine American
Servings 9 brownies
Calories 301 kcal

Ingredients
 
 

  • 1 box peanut butter brownie mix any brand
  • 2-4 tablespoons peanut butter a pouch was included with my brownie mix
  • 1 large egg
  • 2 tablespoons water
  • 2 tablespoons butter melted or vegetable oil

Instructions
 

  • Preheat your oven to the temperature on your brownie mix box, usually 350 °F.
  • In a mixing bowl, combine the brownie mix with water, egg, and melted butter or oil. Use a whisk or an electric mixer to blend until the batter is smooth and well combined. Pour the mixture evenly into the prepared baking dish.
  • Drizzle peanut butter over the top of the batter, then use a butter knife to gently swirl it in. Drag the knife through the mixture to create a marbled effect. If you love extra creaminess, feel free to add a couple more spoonfuls of peanut butter.
  • Bake for the time on your brownie mix box for an 8×8-inch pan, until a toothpick inserted in the center comes out clean. Remove from the oven and let the brownies cool in the pan on a wire rack. Once cooled, slice into squares and enjoy them warm or at room temperature.

Notes

  • Stir the batter until combined to keep brownies soft and fudgy. Overmixing leads to a tougher, dense texture.
  • Use a toothpick to create unique designs, or add dollops of Nutella or chocolate for a marbled touch.
  • Eggs blend more easily into the batter when they’re not cold. Forgot to take it out? Soak it in warm water for a few minutes.
  • Allow at least 15 minutes for them to set before cutting. If you can slice cleanly, they are ready to serve.
  • Warm a knife under hot water, wipe between slices, and get perfect, smooth edges with every cut.
  • Enjoy these brownies warm from the oven when they are extra gooey and soft.
Serve: Serve peanut butter brownies from mix as they are or with vanilla ice cream. For a fun twist, crumble over Greek yogurt for a sweet breakfast!
Store: Store leftover peanut butter brownies from mix in an airtight container and keep them in the fridge for up to 4 days or in the freezer for up to a month. To reheat, pop them in the oven until they’re nice and gooey again!

Nutrition

Calories: 301kcalCarbohydrates: 45gProtein: 4gFat: 12gSaturated Fat: 4gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.1gCholesterol: 27mgSodium: 209mgPotassium: 30mgFiber: 0.2gSugar: 29gVitamin A: 108IUCalcium: 6mgIron: 2mg
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