Begin by preheating the oven to 350° F and pulling out the frosting ingredients from fridge to allow them to come to room temperature.
For the Cake
Boil the water in a pan on the stove, or in the microwave. Once it is boiling add the oats and let them soak until you are ready to add them to the batter.
Smash bananas with a fork or potato masher, then add the melted butter and eggs and mix well.
mix in the sugars and vanilla.
Add the dry ingredients on top of the wet ones and mix then together.
Once the dry ingredients are mixed add the oats and mix them until everything is incorporated.
Pour the batter into 2 9-inch round cake pans that have been buttered and floured.
Bake at 350° F for 30-40 min until a toothpick comes out clean.
Natural Peanut Butter Frosting
Begin by mixing room temperature butter, cream cheese, and peanut butter together with a hand mixer.
Add the powdered sugar 1/2 cup at a time while you continue mixing.
Once the ingredients begin to thicken, add the vanilla and enough milk to soften the frosting and make it a spreadable consistency.
When the cake has completely cooled, frost it, beginning with a layer between the two rounds.
If desired, top the cake with banana slices.
Enjoy your banana oat cake with peanut butter frosting within a couple days or store in the refrigerator for up to a week
Keyword banana, cake, dessert, from scratch, peanut butter, whole grain