Name: Chocolate Peanut Butter Brownies
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Yield: 12 Servings
Cuisine: American

Real Life of Lulu Verified

January 23, 2026

These chocolate peanut butter brownies are the ultimate treat, combining gooey brownies with creamy peanut butter swirls. The best part? They’re super easy to make and come together in no time. Perfect for when you’re craving something sweet or need a quick dessert to share!

From the Cook

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Chocolate Peanut Butter Brownies

Real Life of Lulu Verified

Ingredients

WarningMilk and 7 other allergens identified

Instructions

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Instructions

Preheat the oven to 320℉.

Line the 8"x8" pan with parchment paper or grease with cooking spray or butter. Set aside.

Combine the brownie mix with water, egg, and oil. Use an electric mixer or whisk and blend until smooth.

Pour the mixture evenly into the square pan.

Spoon small dollops of peanut butter over the top. Use a knife, skewer, or toothpick to gently swirl it into the batter, creating a marbled effect. Be careful not to overmix—you want distinct swirls, not fully blended batter.

Bake at 320℉ for 15-18 minutes or until a toothpick inserted in the center comes out clean.

Cool completely on a wire cooling rack before cutting into squares.

Smart Nutrition

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Tips & Tricks (5)

Peanut Butter Swirl Technique 🌀
Warm the peanut butter slightly before swirling to create smoother, more even marbling throughout the brownie batter.
Moisture Magic 💧
Replace water with milk in the brownie mix for an extra rich and fudgy texture that complements the peanut butter perfectly.
Pan Preparation Pro 🥣
Line your baking pan with parchment paper with overhanging edges for easy removal and clean cutting of brownies.
Peanut Butter Variation 🥜
Experiment with crunchy peanut butter for added texture, or mix creamy and crunchy for a more complex mouthfeel.
Cooling Technique 🧊
Allow brownies to cool completely in the pan for at least 30 minutes to set the texture and make cutting cleaner.