Easy Banana Cake Bars with Cream Cheese Frosting

– 3 medium-sized very ripe bananas, mashed – 1 (14 ounce) box yellow cake mix – 1 1/2 teaspoon cinnamon – 3 large eggs, near room temperature – 1/4 cup unsalted butter, melted and cooled down a bit – 1/4 cup vegetable oil – 1/2 cup sour cream, near room temperature – 1/2 cup milk, near room temperature – 1 teaspoon vanilla extract – 1 cup chopped walnuts or pecans (optional)

Ingredients for the cake bars:

– ½ cup unsalted butter, room temperature (1 stick) – 1 (8 ounce package) cream cheese, near room temperature – 1 pinch salt – 1 teaspoon vanilla extract – 3 cups confectioner's sugar – 1 teaspoon milk (may use more if needed to reach desired consistency)

Ingredients for the frosting:

Preheat the oven to 350 degrees F. Spray a 13x9 inch baking dish with nonstick spray and set aside.

In a large mixing bowl, add all of the cake bar ingredients, except for the nuts and mix with an electric mixer on medium until well mixed. Add the nuts, if desired, and mix in by hand.

Pour the batter into the prepared baking dish and bake at 350 degrees F for approximately 30-35 minutes.

Make the frosting by adding all of the frosting ingredients to a large mixing bowl and mixing at medium-high speed until smooth.

Spread frosting onto cooled cake bars.

These cake bars can be served nd eaten either chilled, at room temperature, or warmed.

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