Frosted Peanut Butter Banana Snack Cake | Cleveland Southside Moms
Rich squares of banana cake topped with impossibly smooth peanut butter frosting.
For the Cake:
  • 2 cups brown sugar
  • 1 cup unsalted butter, melted
  • 2 eggs
  • 2 teaspoons vanilla extract
  • 3 bananas, mashed
  • 2½ cups all-purpose flour
  • 1½ cups chopped nuts (optional)
For the Frosting:
  • ½ cup unsalted butter
  • ¼ cup smooth peanut butter
  • ⅓ cup whole milk
  • 1 teaspoon vanilla extract
  • 4½ cups powdered sugar
  1. Preheat your oven to 350 degrees F and line a 9×13-inch baking dish with parchment paper. Set aside.
  2. In the bowl of your mixer, beat together the brown sugar and melted butter until the consistency of wet sand, about 2-3 minutes. Beat in your eggs, one at a time, until fully incorporated, scraping down the bowl as needed. Beat in the vanilla and mashed bananas, again, scraping down the sides of the bowl as needed. Mix in the flour, then fold in the chopped nuts, if you’re using them. Spread the batter into your prepared dish and bake for 30 minutes or so, until golden and set. Allow the cake to cool completely before frosting (you can put it in the fridge or freezer to speed this up).
  3. To make the frosting, bring your ½ cup butter, ¼ cup peanut butter, ⅓ cup milk, and 1 teaspoon vanilla to a boil, whisking until smooth. Remove the mixture from the heat and whisk in your powdered sugar, until smooth, adding a bit more if needed (or a bit more milk if it’s too thick). Immediately pour the frosting over the cooled banana cake, using a spatula to smooth it out. Let the frosting set before slicing (again, you can place the cake in the fridge or freezer to speed this up). Slice into squares and enjoy! These will keep well, covered and refrigerated, for up to 3 days.


Courtesy Of The Crepes Of Wrath

Join The Cleveland Southside Moms Community

Stay up-to-date with what is happening in-and-around The Cleveland Southside Moms community with local events, community highlights, and exclusive deals.

Join Our Community!

Get monthly event highlights, exclusive offers, invites, and more sent directly to your inbox!

Thanks for joining us!