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Stack of 3 moist brownies placed one on top of each other
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5 from 15 votes

Banana Brownies

These banana brownies are chewy, fudgy and incredibly moist. They have a delicious chocolate flavor with a hint of banana and chocolate chips. Made with simple, everyday ingredients - they're the perfect way to use up your brown bananas AND get your chocolate fix. 
Prep Time15 minutes
Cook Time35 minutes
Total Time50 minutes
Course: Dessert
Cuisine: American
Keyword: Banana Brownies
Servings: 18 large brownies
Author: Fiona Dowling

Equipment

  • 9x13 inch (23 x 33 cm) baking pan*

Ingredients

  • 1 cup unsalted butter (226 grams)
  • 2 cups white sugar (400 grams)
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup mashed bananas (240 ml) about 2-3 large, brown bananas
  • 1 1/4 cup all-purpose flour (156 grams) AKA plain flour
  • 3/4 cup cocoa (60 grams)
  • 1/2 teaspoon salt
  • 1 1/2 cup chocolate chips (270 grams)
US Customary - Metric

Instructions

  • Preheat the oven to 350F degrees (180C or 170C fan forced). Line a 9x13 inch (23x33 cm) pan with parchment paper or aluminum foil leaving an overhang around the sides. Alternatively, lightly grease the pan.
  • Add the butter and sugar to a large bowl. Microwave for 45 seconds on medium power, then remove from the microwave and stir. Repeat the process until the butter is melted. Alternatively, melt in a double boiler.
  • Allow the mixture to cool slightly, then whisk in the eggs and vanilla extract.
  • Stir in the mashed bananas.
  • If the cocoa is lumpy, sift it first. Then gently whisk the flour, cocoa powder, and salt into the batter. Note: there will be lumps in the batter from the banana.
  • Stir in the chocolate chips.
  • Pour/spoon the batter into the prepared pan and bake for about 35 minutes, or until an inserted toothpick comes out clean or with a few damp crumbs.
  • Cool fully (about 4 hours), then slice. Store brownies in an airtight container in the fridge for up to 4 days.

Notes

  1. For a Smaller Batch: Divide the recipe in half and bake in an 8x8 inch (20x20 cm) pan. The bake time will be 30-35 minutes. You'll need:
    • 1/2 cup butter
    • 1 cup sugar
    • 1 large egg
    • 1/2 teaspoon vanilla extract
    • 1/2 cup mashed banana
    • 1/2 cup plus 2 tablespoons all-purpose flour
    • 1/4 cup plus 2 tablespoons cocoa powder (6 tablespoons in total)
    • 1/4 teaspoon salt
    • 3/4 cup chocolate chips
  2. Bananas: You'll need about 2-3 large bananas or 3-4 smaller bananas. Make sure the bananas are brown and spotty.
  3. Nutrition: Details provided are an estimate only and based on 1 brownie, assuming the pan is sliced into 18 equal pieces. 
  4. Storage: Store cooled brownies in the fridge for up to 4 days. Because these brownies are incredibly moist, I recommend storing in the fridge or they can go bad quite quickly. 

Nutrition

Calories: 311kcal | Carbohydrates: 44g | Protein: 3g | Fat: 15g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.4g | Cholesterol: 50mg | Sodium: 85mg | Potassium: 120mg | Fiber: 2g | Sugar: 33g | Vitamin A: 387IU | Vitamin C: 1mg | Calcium: 30mg | Iron: 1mg