The peanut butter brownie swirl is a decadent dessert that combines the rich, fudgy texture of brownies with the creamy, nutty flavor of peanut butter. This particular peanut butter brownie recipe creates a visually stunning swirl and an even more delightful taste, making it a favorite for gatherings or a cozy night in. I remember the first time I perfected this peanut butter brownie swirl; the aroma alone was enough to draw everyone to the kitchen. The key is in achieving that beautiful marble effect, ensuring every bite has both chocolate and peanut butter. This recipe is perfect for those who love the classic combination of chocolate and peanut butter, offering a homemade treat that’s far superior to store-bought options. It’s a fantastic way to satisfy your sweet tooth with a touch of gourmet flair.

Peanut Butter Cup Brownie Swirl: Your Ultimate Craving Fix!
Ingredients
Method
- Gather all ingredients. Spray an 8 x 8 baking pan with cooking spray. Preheat oven to 350F. Melt 2 tablespoons peanut butter and 1 teaspoon salted butter together in microwave for 30 seconds, then add 1 teaspoon stevia/erythritol blend and combine. Set aside.
- In a bowl or food processor, combine 3/4 cup stevia/erythritol blend, 1/3 cup unsweetened cocoa powder, 1/3 cup almond flour, and 1/8 teaspoon kosher salt. Melt 1/2 cup salted butter in microwave, then add to flour mixture and combine. Add 2 large eggs and 2 tablespoons half-and-half. Combine everything well. Pour into prepared pan.
- Put dollops of peanut butter mix on top of the brownie mix. Take a knife and swirl the peanut butter through the chocolate. Sprinkle the top lightly with salt. Bake for 20 minutes.
- Remove from oven and set on a cooling rack. Cool completely before serving, for best flavor.
Notes
– For a perfect swirl, use a knife or a skewer to gently cut through the dollops of peanut butter. Don’t overdo it, or the colors will fully combine.
– To ensure proper doneness without overbaking, a toothpick inserted into the brownie portion (away from the peanut butter swirl) should come out with moist crumbs, not wet batter. Overbaking leads to dry brownies.
– Store leftover peanut butter brownie at room temperature in an airtight container for up to 3 days, or refrigerate for up to a week. For longer storage, freeze individual portions for up to 2 months and thaw at room temperature. Nutrition information is an estimate, calculated automatically. Values vary with brands, substitutions and portion sizes.
Pro tips
- Don’t overmix the brownie batter once the wet ingredients are added; this can make the brownies tough. Mix just until combined.
- For a perfect swirl, use a knife or a skewer to gently cut through the dollops of peanut butter. Don’t overdo it, or the colors will fully combine.
- To ensure proper doneness without overbaking, a toothpick inserted into the brownie portion (away from the peanut butter swirl) should come out with moist crumbs, not wet batter. Overbaking leads to dry brownies.
- Store leftover peanut butter brownie at room temperature in an airtight container for up to 3 days, or refrigerate for up to a week. For longer storage, freeze individual portions for up to 2 months and thaw at room temperature.
This peanut butter brownie swirl is truly a showstopper that delivers on flavor and presentation. Give it a try for your next dessert, and don’t hesitate to experiment with different nut butters for a unique twist. Enjoy every fudgy, nutty bite!
Try this next: Crave-Worthy Keto Peanut Butter Balls!
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