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Cosmic Brownie Banana Bread

Cosmic Brownie Banana Bread made from the original creator's recipe — full step-by-step video included.

Prep15 min
Cook50 min
Total1 h 05
Servesa 9x5 loaf pan

Ingredients

  • 1/2 cup (113g) unsalted butter, melted & slightly cooled
  • 1/2 cup (100g) brown sugar, packed
  • 1/2 cup (100g) granulated sugar (drop to 1/4 cup if you want it less sweet)
  • 2 eggs, room temp
  • 1 1/2 tsp vanilla extract
  • 3 medium overripe bananas, mashed
  • 1/4 cup (60g) sour cream or greek yogurt, room temp
  • 1 1/4 cups (160g) all-purpose flour, spooned & leveled or weighed (don't pack it in)
  • 1/2 cup (50g) unsweetened cocoa powder
  • 1/2 tsp cornstarch (optional)
  • 1 tsp baking soda
  • 1/2 tsp salt
  • 3/4 cup chocolate chips (optional)
  • 6 oz (170g) semisweet chocolate (for the chocolate ganache)
  • 85 mL (~1/3 cup) heavy cream (for the chocolate ganache)
  • 1 tbsp (15g) unsalted butter (room temp or softened) (for the chocolate ganache)
  • + rainbow candy coated chocolate chips for topping (for the chocolate ganache)

Instructions

  1. Preheat oven to 350°F (175°C) and line/grease a 9x5 loaf pan.
  2. Whisk together the melted butter and both sugars.
  3. Mix in eggs and vanilla.
  4. Add in the mashed bananas and sour cream/greek yogurt and mix until combined.
  5. In a separate bowl, combine flour, cocoa powder, cornstarch, baking soda, and salt.
  6. Fold the dry ingredients into the wet until just combined. Don't over mix.
  7. Gently fold in chocolate chips.
  8. Pour batter into the prepared loaf pan.
  9. Bake for 50-65 minutes or until a toothpick comes out clean/with a few moist crumbs.
  10. Let it cool in the pan for 10 minutes then transfer to a wire rack to cool completely.
  11. To make the ganache, melt the chocolate and heavy cream together. Microwave in 15-second intervals, stirring in between until smooth.
  12. Stir in the butter until melted and glossy.
  13. Let it sit at room temp (or refrigerate) until firm/spreadable.
  14. Spread on top of the cooled banana bread and sprinkle the rainbow candy-coated chocolate chips on top.
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