• Preheat the oven to 350°F (175°C). Spray a 9x5-inch loaf pan with non-stick cooking spray and set aside.
• In a large bowl, whisk together flour, cocoa powder, baking soda, and baking powder. Set aside.
• In a medium bowl, use an electric mixer to beat the softened butter, granulated sugar, and brown sugar until light and fluffy. Beat in the eggs one at a time, followed by the mashed bananas, until well combined.
• Gradually mix the wet ingredients into the dry ingredients until just combined. Gently fold in the chocolate chips.
• Pour the batter into the prepared loaf pan, smoothing the top. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean. Allow the bread to cool in the pan.

Making The Frosting

• In a medium saucepan, heat the heavy cream and brown sugar over medium heat, stirring until the sugar dissolves and the mixture begins to bubble slightly. Stir in the butter and vanilla extract until melted. Remove from heat and add the chocolate chips, whisking until smooth and glossy. Allow the frosting to cool for 10-15 minutes.
• Remove the bread from the pan and drizzle the frosting over the top. Let the frosting set slightly before slicing and serving.