
These fudgy peanut butter brownies have become my go-to dessert for birthdays and casual gatherings. Creamy swirls of peanut butter meet decadent chocolate for a perfect sweet treat that never lasts long on the dessert table.
When I first made these for my nephews they thought I had picked them up from a bakery and now it is the family request for every movie night.
Ingredients
- Brownie layer: Use any 8 inch pan brownie recipe boxed or homemade for crowd pleasing fudginess Pick a recipe with real cocoa powder for richest flavor
- Peanut butter: Creamy or natural both work well Just make sure it is fresh for maximum flavor and smoothness
- Butter: Use high quality butter or try a non dairy spread for a vegan version Room temperature butter is key for a well blended filling
- Powdered sugar or erythritol: For sweetness and a melt in your mouth texture Sift before using to avoid lumps
- Milk of choice: Whole milk gives creaminess but plant based alternatives like almond or oat milk blend seamlessly in the filling
- Chocolate chips: Optional for an added glossy topping Choose a dark or semisweet chocolate for a balanced bite
- Oil: Just a touch helps the chocolate melt smoothly and slice neatly after chilling Go for a neutral oil such as sunflower or grapeseed
Step-by-Step Instructions
- Bake the Brownie Layer:
- Prepare your preferred 8 inch brownie base and bake according to recipe instructions Let cool completely in the pan for clean layers
- Whip Up the Peanut Butter Filling:
- Beat together room temperature butter and peanut butter until creamy and blended For best results use a hand mixer though a sturdy fork can work With mixer running add sifted powdered sugar and milk Continue to whip until thick silky and smooth
- Spread the Filling:
- Using an offset spatula or wide knife carefully spread the peanut butter mixture evenly over the cooled brownies Take your time to reach every corner with an even layer
- Coat with Chocolate Optional:
- For bakery style brownies gently melt chocolate chips and oil in a heat safe bowl stirring until glossy Smooth the warm chocolate over the peanut butter layer using long strokes Place in the freezer or fridge to set until firm
- Slice and Serve:
- Once fully set carefully cut into squares using a warm sharp knife for tidy edges Serve chilled or at room temperature and enjoy the contrast of fudgy brownies and creamy peanut butter

The silky peanut butter topping always brings back memories of childhood baking days with my sister We would sneak little tastes of the filling while the brownies cooled and it never failed to make us both laugh
Storage Tips
These brownies keep best in an airtight container in the refrigerator to keep the peanut butter layer firm They can also be frozen in a single layer and thawed as needed Perfect for whipping out when last minute guests arrive
Ingredient Substitutions
Swap in almond butter or sunflower seed butter for allergy friendly versions Powdered erythritol sweetens just like sugar for lower carb or keto options Vegan butter and non dairy milk work seamlessly for a dairy free dessert

Serving Suggestions
Serve chilled for neat layers or let them come to room temperature for a softer bite For a party platter try drizzling with extra melted peanut butter or adding a sprinkle of flaky salt to balance the sweetness
The Story Behind the Brownie
Peanut butter and chocolate is an American classic inspired by the popularity of both fudge brownies and peanut butter candies Combining the two in a single dessert makes for a nostalgic treat that feels both homey and a little bit special
Recipe FAQs
- → Can I use natural peanut butter?
Yes, natural peanut butter can be used. Ensure it's well-stirred and not overly runny for best results.
- → Are there butter-free options for the filling?
Yes, you can substitute margarine or plant-based butter to make the peanut butter layer dairy-free.
- → How do I keep the filling smooth?
Soften both peanut butter and butter before mixing. Using a hand mixer helps achieve a creamy texture.
- → Is the chocolate coating necessary?
No, the brownies taste delicious without it, but the coating adds an extra layer of flavor and texture.
- → How should leftovers be stored?
Store brownies in an airtight container in the refrigerator. Let them come to room temperature before serving.