Cake
Preheat your oven to 350°F (baking temperature) and grease your 13x9 pan. Mash the bananas and set aside.
Whisk together flour, baking soda, baking powder, salt, and cinnamon in a bowl. In another medium bowl, beat butter and both sugar types until creamy.
Add eggs, vanilla, and mashed bananas, then slowly add dry ingredients (Step 2) alternating with buttermilk.
Pour batter into the cake pan and bake for about 50 minutes until the toothpick poked at the middle comes out mostly clean (no moist crumb).
Cool on the wired rack; refrigerate it after 45 minutes.
Frosting
Beat cream cheese along with butter until smooth. Add confectioners' sugar (3 to 3 1/4 cups), salt, and vanilla, mixing until smooth at high speed.
Spread this frosting onto the cake and refrigerate a bit before serving.
- Ensure your butter and eggs are at room temperature first
- Buttermilk is crucial for the best banana layer cake due to its acidity; substitute a mixture of milk and lemon juice if unavailable.
- To keep your frosted cake fresh for about four days, refrigerate it in an airtight container.
- Leftover or unfrosted cake can be frozen for three months; just wrap it tightly in plastic and foil! Thaw it in the fridge overnight, then add fresh frosting before serving.
Calories: 590kcal | Carbohydrates: 50.6g | Protein: 11.5g | Fat: 21.4g | Saturated Fat: 21.4g | Cholesterol: 189mg | Sodium: 422mg | Potassium: 107mg | Fiber: 302g | Sugar: 21.5g | Calcium: 493mg | Iron: 4mg