Gluten-Free Keto Peanut Butter Swirl Brownies

Rich, fudgy keto brownies made with almond flour and sweetened with erythritol, featuring swirls of creamy peanut butter throughout. These low-carb treats satisfy chocolate cravings without the sugar, perfect for ketogenic dieters or anyone reducing carbs. The combination of cocoa powder and sugar-free chocolate chips creates deep chocolate flavor, while natural peanut butter adds protein and healthy fats. Ideal for dessert, snacks, or special occasions when you want indulgent treats that fit your macros.
Ingredients
Instructions
- 1
Preheat oven to 350°F and line 8-inch square baking pan with parchment paper, leaving overhang for easy removal
- 2
Whisk together almond flour, cocoa powder, baking soda, and salt in medium bowl
- 3
Combine melted butter and erythritol in separate bowl, stirring until well mixed
- 4
Beat in eggs one at a time, then stir in vanilla extract
- 5
Gradually blend dry ingredients into wet mixture until just combined
- 6
Fold in sugar-free chocolate chips
- 7
Pour batter into prepared baking pan, spreading evenly with spatula
- 8
Warm peanut butter in microwave until runny but not hot, about 30 seconds
- 9
Drop dollops of peanut butter over brownie batter
- 10
Use knife or toothpick to swirl peanut butter into batter, creating marbled effect
- 11
Bake for 20-25 minutes until edges are set but center is still slightly soft
- 12
Cool in pan for at least 10 minutes before lifting out and cutting into squares
Tips
Don't overbake - brownies should be slightly soft in center when done for fudgy texture
Let brownies cool completely before cutting for clean slices and best texture
Warm peanut butter just until spreadable to prevent it from sinking into batter
Good to Know
Store covered at room temperature up to 3 days or refrigerate up to 1 week
Can be made 1-2 days ahead and stored covered
Serve at room temperature or slightly chilled
Common Mistakes
Don't overmix batter to avoid tough brownies
Don't overbake to avoid dry texture
Don't skip cooling time to avoid crumbly cuts
Substitutions
Nut-Free Alternatives
General Alternatives
FAQ
Can I use regular sugar instead of erythritol?
Yes, but it won't be keto-friendly. Use 1/2 cup regular sugar and expect softer texture and higher carbs.
What if my brownies are too soft after cooling?
Refrigerate for 30 minutes to firm up, or bake 2-3 minutes longer next time for firmer texture.
How long do these brownies keep?
Store covered at room temperature up to 3 days or refrigerate up to 1 week for best quality and texture.