
If you love moist, flavorful banana desserts, this Banana Coffee Cake is a must-try, perfect for breakfast, brunch, or dessert. With its tender crumb and sweet streusel topping, it’s a delightful blend of banana bread and coffee cake!
Preheat to 350°F and grease a 9x13 inch baking dish or line it with parchment paper. Set that aside.
In a large bowl, mash the bananas. Add granulated sugar, brown sugar, egg, melted butter, vanilla extract, and sour cream. Mix until smooth.
In a medium bowl, whisk together flour, baking soda, baking powder, cinnamon, and salt.
Add the dry ingredients to the wet ingredients and stir until just combined. Be careful not to overmix. There will be lumps left in the batter.
Pour the batter into the prepared baking dish.
In a small bowl, combine flour, brown sugar, and cinnamon. Cut in cold butter with a pastry cutter or fork until the mixture is crumbly.
Sprinkle the streusel topping evenly over the batter. Bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean. Let cool before cutting into the cake.