Description
This Fudgy Slab Banana Brownie recipe combines moist banana bread and decadent brownies, delivering a rich, fruity, and fudgy texture with a beautiful golden banana marble swirl, perfect for satisfying sweet cravings. It is an easy, family-friendly dessert.
Ingredients
Scale
- 2–3 large (approx. 200–250 g) ripe bananas, for mashing
- 0.5 cup (45 g) unsweetened cocoa powder
- 1 cup (120 g) all-purpose flour
- 0.5 cup (113 g) butter, melted
- 2 large eggs
- 1 cup (200 g) granulated sugar
- 0.5 cup (100 g) brown sugar
- 1 tsp vanilla extract
- 0.5 tsp baking powder
- 0.25 tsp salt
Instructions
- Prep Your Pan: Preheat oven to 350F (175C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the longer sides for easy removal.
- Mash the Bananas: In a medium bowl, mash 2-3 ripe bananas until mostly smooth, leaving a few small lumps for texture.
- Melt and Mix Wet Ingredients: In a large microwave-safe bowl, melt 0.5 cup (113 g) butter for about 30-45 seconds. Stir in 1 cup granulated sugar, 0.5 cup brown sugar, 2 large eggs, and 1 tsp vanilla extract until well combined and glossy, about 1 minute.
- Whisk Dry Ingredients: In a separate bowl, whisk together 1 cup all-purpose flour, 0.5 cup unsweetened cocoa powder, 0.5 tsp baking powder, and 0.25 tsp salt until fully blended, about 30 seconds.
- Combine Batter: Gradually add the dry ingredients to the wet ingredients, mixing gently until just combined. Do not overmix. If the batter looks too thick or dry, splash in 1-2 Tbsp of milk or a plant-based alternative.
- Marble the Brownies: Spoon half of the brownie batter evenly into the prepared pan. Dollop the mashed bananas over the batter. Cover with the remaining brownie batter. Use a knife or skewer to gently swirl the banana through the top layer for a beautiful golden banana marble effect, using just 4-5 passes.
- Bake Brownies: Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs, but not wet batter. The edges should look set and slightly puffed.
- Cool and Cut: Let cool completely in the pan for at least 1 hour before lifting out by the parchment paper and cutting into 18-24 fudgy slab banana brownie squares. Avoid cutting while warm to prevent crumbling and ensure a clean cut.
Notes
For the best flavor, always use very ripe, spotty bananas. Do not overmix the batter to avoid tough brownies. For a chewier brownie, bake closer to 25 minutes; for a cakier one, closer to 30 minutes. Let cool completely before cutting for clean squares.
- Prep Time: 20 minutes
- Cook Time: 28 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 square
- Calories: 250 calories
- Sugar: 25 g
- Sodium: 100 mg
- Fat: 14 g
- Saturated Fat: 6 g
- Unsaturated Fat: 8 g
- Trans Fat: 0 g
- Carbohydrates: 35 g
- Fiber: 2 g
- Protein: 3 g
- Cholesterol: 30 mg
Keywords: easy dessert, fudgy brownie, banana marble, slab brownie, home-style bake, sweet treat, family-friendly, ripe banana
