Peanut Butter Brownies from Brownie Mix
Easy peanut butter brownies from brownie mix with swirls of creamy peanut butter.
Servings 16
Calories 118kcal
Cost $2-$4
Equipment
- 9x9-inch pan
Ingredients
Brownie base
- 1 box brownie mix (about 18 ounces)
- eggs room temp & lightly beaten (see box for amount)
- water sub:milk, buttermilk, or coffee (see box for amount)
- oil (see box for amount)
- ½ teaspoon instant coffee or ¼ teaspoon espresso powder (optional)
Peanut butter mixture
- ¾ cup creamy peanut butter salted (or add a pinch of salt)
- ¼ cup powdered sugar
Instructions
- Prepare the brownie batter according to the package directions. Spread evenly in a 9×9-inch pan.
- In a small bowl, mix the peanut butter and powdered sugar until smooth. If thick, warm in the microwave for a few seconds.
- Spoon dollops of the peanut butter mixture over the brownie batter. Use a knife or skewer to gently swirl.
- Bake according to the package directions.
- Let cool, then chill for about 30 minutes before cutting for cleaner slices.
Notes
- Brownie mix: Any brand works.
- Peanut butter: Creamy peanut butter is easiest to swirl.
- Water: You can use milk, buttermilk, or brewed coffee instead for richer brownies.
- Instant coffee: Optional, but makes the chocolate taste stronger and keeps brownies from tasting too sweet.
- Line the pan with parchment so brownies don’t stick.
- Start checking a few minutes early to avoid overbaking.
- A toothpick with a few moist crumbs means fudgy brownies.
- Chill before slicing for cleaner cuts.
Nutrition
Calories: 118kcal | Carbohydrates: 4g | Protein: 4g | Fat: 10g | Saturated Fat: 2g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 20mg | Sodium: 64mg | Potassium: 87mg | Fiber: 1g | Sugar: 3g | Vitamin A: 30IU | Calcium: 8mg | Iron: 1mg