Frosted Banana Bars

I think I've been cooking out of boredom lately. Sad, huh? To bad all I'm making is junk food...I had some old bananas and decided to try THIS recipe. Yummy! I'm completely addicted to these. I make them ALL the time. They are probably my favorite.

Ingredients:
1/2 cup butter, softened
1 1/2 cups white sugar
2 eggs
1 cup sour cream
1 teaspoon vanilla extract
2 cups all-purpose flour
1 teaspoon baking soda
1/2 teaspoon salt
1 cup mashed ripe bananas
1 (16 ounce) container cream cheese frosting (I made my own frosting and I'll add the recipe at the end)

Directions:
1. Preheat oven to 350 degrees. Grease 10X15 inch jellyroll pan.
2. 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.
3. Bake for 20-25 minutes in the preheated oven, until a toothpick inserted into the center comes out clean. Allow bars to cool completely before frosting.

Frosting
1 pkg (8oz) cream cheese, softened
1/2 cup (1 stick) butter, softened
1 pkg (16 oz) powdered sugar (about 4 cups)
1 tsp vanilla