Banana Chocolate Chip Sheet Cake with Nutella Frosting
Equipment
- 9x13x2 inch (33x23x5 cm) baking pan
Ingredients
For the Cake:
- 3 cups all-purpose flour (375 g)
- 2 1/4 teaspoons baking powder
- 3/4 teaspoon salt
- 2 teaspoons cinnamon
- 3/4 cup butter, softened (170 g)
- 1 cup brown sugar (200 g)
- 4 large eggs
- 1 1/2 teaspoons vanilla extract
- 1 cup milk (237 ml)
- 300 grams mashed banana (about 3 medium bananas)
- 1 1/2 cups chocolate chips (250 g)
For the Frosting:
- 1 cup butter, softened (227 g)
- 3 1/2 cups confectioner's sugar (420 g)
- 1/3 cup milk (80 ml)
- 3/4 cup nutella
Instructions
Make the Cake:
- Preheat the oven to 350° F (180° C) and line a 9x13 inch (33x23 cm) baking pan with parchment paper or spray with baking spray. In a medium bowl, combine the flour, baking powder, salt, and cinnamon, and set aside. In another medium bowl, mash the bananas with a potato masher and set aside.
- In a large bowl, cream the butter and brown sugar together until fluffy. Mix in the eggs one at a time, then add the vanilla, milk, and mashed bananas. Mix until well combined.
- Add the flour mixture and mix in gently. Before the batter is all the way combined, add the chocolate chips and switch to a spoon, stirring until the batter is fully combined but being careful not to overmix.
- Bake at 350° F (180° C) for about 30 minutes, or until the top of the cake springs back when touched. Allow the cake to cool for an hour before frosting.
Make the Frosting:
- In a large bowl, beat the butter alone until it becomes fluffy, about 1 minute. Add a cup of confectioner's sugar anda tablespoon of milk, and mix until fully combined. Continue adding the rest of the sugar and milk in increments, mixing until the frosting comes together. Finally, mix in the nutella. Scrape the sides of the bowl to make sure the frosting gets thoroughly mixed.
- Use the parchment to lift the cake out of the pan and move to a serving platter, or remove the paper and return to the pan. Frost the cake. You can store the cake for 3 days at room temperature, or for about 5 days in the refrigerator.