banana bars with cream cheese frosting

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Banana Bars with Cream Cheese Frosting from Shalee:
via allrecipes.com

1/2 cup butter, softened
1 1/2 cups white sugar
2 eggs
1 cup sour cream
1 tsp vanilla extract
2 cups all-purpose flour
1 tsp baking soda
1/4 tsp salt
1 cup mashed ripe bananas

Frosting:
1 pkg. cream cheese, softened
1/2 cup (1 stick) butter, softened
3-4 cups powdered sugar

Preheat oven to 350 degrees. Grease a 10x15 inch jellyroll pan. In a large bowl, cream together the butter and sugar until smooth. Beat in the eggs, one at a time, then stir in the sour cream and vanilla. Combine the flour, baking soda and salt; stir into the batter. Finally mix in the mashed banana. Spread evenly into the prepared pan. Bake for 20 to 25 minutes in the preheated oven. Until a toothpick inserted into the center comes out clean. Allow bars to cool completely before frosting with teh cream cheese frosting.