Banana bars with cream cheese frosting are soft and moist banana cake bars; topped with a rich and sweet cream cheese frosting. Its an easy dessert that everyone will love!
Preheat the oven to 350 F (177 C). Lightly grease a 15 x 10 pan (or 9 x 13). In a mixing bowl, whisk the flour, baking soda, ground cinnamon and salt together until well combined.
Whisk the bananas until smooth with just a few lumps. Whisk in the, melted butter, sugar, eggs, sour cream and vanilla extract together until smooth and well combined.
Pour the banana bar batter into the prepared pan. Use a flexible spatula to smooth the batter evenly across the pan.Whisk the dry ingredients into the wet well combined with no visible pieces of flour.
Bake for about 20 - 25 minutes or until the banana cake bounces back with gently pressed. The edges of the banana bread bars will also pull slightly away from the pan.
Beat the butter and cream cheese together until fluffy and well combined. Pour in the vanilla extract, powdered sugar and 1 teaspoon (5 ml) milk. Beat the cream cheese frosting until smooth and well combined.
Spread the cream cheese frosting on top of the fully cooled banana sheet cake bars. If the frosting is too warm or soft, place the frosted banana bars in the fridge for 20-30 minutes. Slice and enjoy!