Peanut Butter Swirl Brownies

Servings: 12 Total Time: 50 mins Difficulty: Beginner
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Introduction

Peanut Butter Swirl Brownies are a decadent twist on the classic brownie, combining the rich, intense flavor of chocolate with the creamy, nutty goodness of peanut butter. Each bite offers a perfect balance of sweet and salty, indulgent and comforting, making these brownies a dessert that feels both luxurious and familiar. The glossy, crackly top gives way to a fudgy, moist interior, while the swirls of peanut butter create pockets of creamy richness that make every square a delightful surprise.

What makes these brownies truly special is the marriage of two beloved flavors: chocolate and peanut butter. Chocolate alone is comforting and indulgent, but when paired with peanut butter, it becomes an irresistible combination that elevates the dessert to a whole new level. The swirls not only add visual appeal, creating a marbled effect that looks as beautiful as it tastes, but they also ensure that every bite has the perfect blend of flavors.

Why I Love This Recipe

I love this Peanut Butter Swirl Brownies recipe because it perfectly combines two of the most beloved flavors—chocolate and peanut butter—into one decadent, fudgy dessert. The richness of the chocolate brownie base pairs flawlessly with the creamy, slightly salty peanut butter swirls, creating a harmonious balance that is both indulgent and comforting. Each bite delivers a mix of textures: a glossy, crackly top, a moist and fudgy center, and pockets of creamy peanut butter that melt in your mouth.

Another reason I adore this recipe is its visual appeal. The marbled swirl pattern gives the brownies a beautiful, artistic look that feels impressive without requiring complicated techniques. Dropping spoonfuls of peanut butter onto the chocolate batter and gently swirling it creates a stunning, homemade masterpiece that is as pleasing to the eyes as it is to the taste buds.

I also love how versatile and approachable this recipe is. Despite tasting like a bakery-quality dessert, it uses simple ingredients and straightforward steps that anyone can follow. It’s perfect for both beginner and experienced bakers who want to create a dessert that feels luxurious without spending hours in the kitchen.

Why This is a Must-Try Dish

Peanut Butter Swirl Brownies are a must-try dessert because they combine the rich, fudgy indulgence of chocolate brownies with the creamy, nutty flavor of peanut butter, creating a dessert that is both visually stunning and irresistibly delicious. The swirl of peanut butter adds a unique texture and flavor dimension that elevates the classic brownie into something truly special. Each bite is a perfect balance of sweet, salty, and chocolatey goodness, making it impossible to eat just one piece.

One of the main reasons this recipe is a must-try is its versatility. While the classic version features a simple peanut butter swirl, it can easily be customized with chocolate chips, chunks of peanut butter cups, or even caramel for an extra layer of decadence. This makes it suitable for a wide range of occasions—from casual family snacks to festive celebrations or homemade gifts. The combination of flavors appeals to children, adults, and dessert enthusiasts alike, ensuring that everyone will enjoy it.

Preparation & Cooking Time

  • Preparation Time: 15 minutes
  • Cooking Time: 30-35 minutes
  • Total Time: 45-50 minutes

Servings & Nutrition

  • Servings: 12
  • Calories: ~320 kcal per serving
  • Course: Dessert / Snack
  • Cuisine: American

Ingredients

For the Brownie Base:

  • 1 cup (226g) unsalted butter
  • 2 ¼ cups (450g) granulated sugar
  • 4 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup (85g) unsweetened cocoa powder
  • 1 cup (125g) all-purpose flour
  • ½ teaspoon salt
  • ½ teaspoon baking powder
  • 1 cup (175g) chocolate chips (optional)

For the Peanut Butter Swirl:

  • ½ cup (125g) creamy peanut butter
  • 2 tablespoons powdered sugar (optional, for sweetness)
  • 1 tablespoon milk (to loosen peanut butter if needed)

Cooking Directions

  1. Preheat oven to 350°F (175°C).
  2. Line a 9×13-inch baking pan with parchment paper or lightly grease it.
  3. Melt butter in a medium saucepan or microwave-safe bowl.
  4. Stir in sugar until combined.
  5. Add eggs one at a time, whisking well after each addition.
  6. Stir in vanilla extract.
  7. Sift in cocoa powder, flour, salt, and baking powder. Mix until just combined.
  8. Fold in chocolate chips if using.
  9. Pour brownie batter into the prepared pan and smooth the surface.
  10. In a small bowl, mix peanut butter with powdered sugar and milk (if needed) until smooth.
  11. Drop spoonfuls of peanut butter over the brownie batter. Use a knife or skewer to swirl the peanut butter into the batter gently.
  12. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Avoid overbaking.
  13. Allow brownies to cool completely in the pan before cutting into squares.

Step-by-Step Preparation Method

Step 1: Prep the pan and oven

  • Preheat oven to 350°F (175°C).
  • Line or grease a 9×13-inch pan.

Step 2: Make the brownie batter

  • Melt butter and stir in sugar until glossy.
  • Beat in eggs one at a time, then stir in vanilla.
  • Sift in cocoa, flour, salt, and baking powder. Fold until just combined.
  • Add chocolate chips if desired.

Step 3: Add the peanut butter swirl

  • Mix peanut butter with powdered sugar and milk if needed.
  • Drop spoonfuls of peanut butter on brownie batter.
  • Swirl gently with a knife for a marbled effect.

Step 4: Bake

  • Smooth the top and bake 30-35 minutes.
  • Check with a toothpick; it should come out with moist crumbs.

Step 5: Cool and cut

  • Cool completely before cutting into squares for neat slices.

How to Serve

  • Serve warm with a scoop of vanilla or chocolate ice cream.
  • Dust with powdered sugar or drizzle extra melted chocolate for presentation.
  • Pair with coffee, milk, or hot chocolate for a decadent treat.

Recipe Tips

  • Avoid overbaking to keep the brownies fudgy.
  • Use high-quality cocoa powder for richer chocolate flavor.
  • Swirl the peanut butter gently to avoid overmixing into the batter.
  • Cool brownies completely before slicing for clean edges.

Variations

  1. Nutty Peanut Butter Brownies: Add chopped peanuts to the swirl for crunch.
  2. Chocolate Peanut Butter Brownies: Fold in peanut butter chips along with chocolate chips.
  3. Salted Caramel Peanut Butter Brownies: Drizzle caramel sauce before swirling the peanut butter.
  4. Espresso Peanut Butter Brownies: Add 1 teaspoon instant coffee to the brownie batter for mocha flavor.
  5. White Chocolate Swirl: Replace half of the peanut butter swirl with melted white chocolate.

Freezing and Storage

  • Storage: Airtight container at room temperature for up to 3 days.
  • Refrigeration: Store in the fridge for up to 1 week.
  • Freezing: Wrap brownies tightly in plastic wrap and foil, freeze for up to 3 months. Thaw at room temperature before serving.

Special Equipment Needed

  • 9×13-inch baking pan
  • Parchment paper
  • Medium saucepan or microwave-safe bowl
  • Whisk or spatula
  • Knife or skewer for swirling
  • Cooling rack

Conclusion

Peanut Butter Swirl Brownies are a decadent and irresistible dessert that combines the rich indulgence of chocolate with the creamy, nutty goodness of peanut butter. They are visually stunning, wonderfully fudgy, and full of flavor in every bite. Whether for a casual treat, a festive gathering, or a special gift, these brownies are sure to delight anyone lucky enough to enjoy them. Easy to make yet impressive in taste and presentation, this recipe is a must-have for any dessert lover’s collection.

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Peanut Butter Swirl Brownies

Difficulty: Beginner Prep Time 15 mins Cook Time 35 mins Total Time 50 mins
Servings: 12 Calories: 320 kcal per serving

Description

Peanut Butter Swirl Brownies are a decadent twist on the classic brownie, combining the rich, intense flavor of chocolate with the creamy, nutty goodness of peanut butter.

Ingredients

For the Brownie Base:

For the Peanut Butter Swirl:

Instructions

  1. Step 1: Prep the pan and oven: Preheat oven to 350°F (175°C). Line or grease a 9x13-inch pan.
  2. Step 2: Make the brownie batter: Melt butter and stir in sugar until glossy. Beat in eggs one at a time, then stir in vanilla. Sift in cocoa, flour, salt, and baking powder. Fold until just combined. Add chocolate chips if desired.
  3. Step 3: Add the peanut butter swirl: Mix peanut butter with powdered sugar and milk if needed. Drop spoonfuls of peanut butter on brownie batter. Swirl gently with a knife for a marbled effect.
  4. Step 4: Bake: Smooth the top and bake 30-35 minutes. Check with a toothpick; it should come out with moist crumbs.
  5. Step 5: Cool and cut: Cool completely before cutting into squares for neat slices.
Keywords: Peanut Butter Swirl Brownies
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Frequently Asked Questions

Expand All:

Q1: Can I use natural peanut butter?

A: Yes, but it may be runnier. Chill slightly before swirling for better control.

Q2: Can I make these gluten-free?

A: Substitute all-purpose flour with a 1:1 gluten-free baking blend.

Q3: Can I use chunky peanut butter?

A: Yes, it will add extra texture, but smooth peanut butter gives a cleaner swirl.

Q4: Can I add chocolate chunks to the swirl?

A: Yes, small pieces of chocolate in the peanut butter swirl create extra pockets of chocolatey goodness.

Q5: How do I make the swirl more defined?

A: Drop peanut butter in dollops and use a skewer to gently swirl without overmixing the brownie batter.

Samantha Doe Food and Lifestyle Blogger

Hi, I'm Samantha, a full-time food blogger, mother of 2 beautiful daughters and a lovely wife. I live in New Jersey with my family. Loves traveling, sharing new recipes, and spending time with my family.