Rich, fudgy brownies with a glossy top and deep chocolate flavor, made extra moist with a surprising ingredient. Perfectly gooey centers and crisp edges make these a crowd favorite.
Author:Emily
Prep Time:15 minutes
Cook Time:25 minutes
Total Time:1 hour 40 minutes
Yield:16 servings
Category:Dessert
Method:Baking
Cuisine:American
Diet:Vegetarian
Ingredients
1/2 cup (112g) unsalted butter, sliced
2/3 cup (55g) natural unsweetened cocoa powder or dutch-processed cocoa powder
2 large eggs
2 1/4 cups (250g) powdered sugar
1/4 cup (50g) mayonnaise
1 tsp vanilla extract
1/4 tsp kosher salt
2/3 cup (85g) all-purpose flour
3/4 cup (135g) semisweet chocolate chips
Instructions
Preheat the oven to 325°F (163°C) and grease an 8×8-inch baking pan. Line with parchment paper, leaving overhang on two sides for easy removal.
In a microwave-safe bowl, melt the butter. Stir in the cocoa powder until smooth and glossy. Set aside.
In a large bowl, whisk together the eggs and powdered sugar until completely smooth, about 1 minute.
Whisk in the mayonnaise, vanilla extract, and salt until combined.
Add the butter and cocoa mixture and whisk until fully incorporated.
Using a spatula, fold in the flour and chocolate chips until just combined.
Spread the batter evenly into the prepared pan.
Bake for 25–30 minutes, starting to check at 25 minutes. The brownies are done when the top is set and the center no longer jiggles.
Remove from the oven and gently drop the pan onto a hard surface to deflate slightly for a fudgier texture.
Cool at room temperature for 10 minutes, then refrigerate for about 45 minutes until fully set.
Lift out using parchment, slice, and serve.
Notes
For gluten-free brownies, substitute the all-purpose flour with a 1:1 gluten-free flour blend.
Do not overbake; slightly underbaked brownies yield a fudgier texture.
Store in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.
Center pieces will be extra gooey; use a knife to gently release them from the parchment.
Mayonnaise adds moisture and richness without affecting flavor.