Decadent Peanut Butter Brownies Recipe for Rich, Fudgy Squares

• Unsalted butter – melted (we prefer unsalted so you can control salt levels; peanut butter already adds salt).
• Granulated sugar – provides sweetness and keeps the brownies soft.
• Vanilla extract and salt – for flavor balance.
• Semi-sweet chocolate chips – melted and cooled slightly for a richer chocolate flavor.
• Eggs – use room temperature eggs so they incorporate easily and reduce overmixing.
• Unsweetened cocoa powder – Dutch-processed is ideal for a smooth, neutral flavor.
• Baking powder – adds a touch of lift for a slightly tender crumb.
• All-purpose flour – kept modest to preserve fudginess.
• Creamy peanut butter – microwaved briefly to make it pourable for swirling; natural peanut butter may be used if stirred well.

Variations and Substitutions:

• Nutty: Fold in chopped walnuts or pecans before baking.
• Set or creamy peanut butter: To keep the peanut butter swirl creamier, cover the pan with foil for the last 10 minutes of baking; leave uncovered if you prefer a firmer, slightly darker top.
• Top with frosting: Swap the swirl for a peanut butter frosting after baking.
• Box mix shortcut: Use a boxed brownie mix and follow the swirl steps below for peanut butter ribbons.

Step 1: In a large bowl, beat the melted butter and granulated sugar until combined. Stir in vanilla and the melted chocolate until well mixed.

Step 2: Add the eggs and mix just until incorporated. For fewer cracks and less puffing, you can whisk the eggs in by hand.

Step 3: Sift the dry ingredients—cocoa powder, salt, baking powder, and flour—over the wet mixture to remove lumps.

Step 4: Fold the dry ingredients into the batter with a rubber spatula just until combined—avoid overmixing to keep brownies tender.

Step 5: Spread the batter evenly into the prepared pan. Microwave the peanut butter about 15 seconds so it’s smooth and slightly pourable. Spoon dollops of peanut butter over the top.

Step 6: Use a butter knife to swirl the peanut butter into the brownie batter, creating pretty ribbons.

Step 7: Bake 35–40 minutes, or until moist crumbs cling to a toothpick inserted in the center (no wet batter). Remove from oven and let cool completely.

Step 8: Lift the brownies from the pan using the parchment paper edges and slice into squares with a sharp knife.

Recipe Tips

• Melted butter helps dissolve sugar crystals, producing a shiny, crackly top and chewy edges.
• Mix eggs by hand if you want to limit air in the batter and reduce puffing and cracking.
• Use good-quality chocolate for the best flavor; the chocolate really stands out in these brownies.

Fun Fact

The main difference between brownies and cakes is that cakes contain more flour, which makes them lighter and more cake-like.

Yes. Once completely cooled, wrap squares in several layers of plastic wrap and place in a freezer bag for up to 1 month. Thaw in the refrigerator or at room temperature. Leftovers kept airtight last up to 5 days in the fridge or at room temperature.

Accurate ingredient measurements, minimal mixing, and careful timing in the oven are key to moist brownies. Remove them when a few moist crumbs cling to a toothpick rather than waiting for the center to be completely dry.