Step 1: Prepare the Batter
Preheat oven to 350°F (175°C). Grease and flour a 9×13-inch pan.
Whisk together flour, baking soda, baking powder, salt, and cinnamon.
In another bowl, cream butter and sugars until fluffy. Add eggs one at a time, mixing well, then stir in vanilla.
Mix in mashed bananas, sour cream, and milk. Gradually fold in the dry ingredients.
Step 2: Bake the Cake
Pour batter into prepared pan and spread evenly.
Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.
Let cake cool completely before frosting.
Step 3: Make the Frosting
Beat cream cheese and butter until smooth.
Gradually add powdered sugar and beat until fluffy.
Mix in vanilla and milk (if needed) to adjust consistency.
Step 4: Frost & Serve
Spread frosting evenly over cooled cake.
Top with nuts or caramel drizzle if desired. Slice and enjoy! 🍰✨