Banana Bars with Cream Cheese Frosting

Bars:
1/2 cup butter
1 cup sugar
1/2 cup brown sugar
2 eggs
2-3 mashed bananas
1/2 cup full-fat sour cream
1 tsp baking soda
2 cups flour
1/2 tsp salt
1 tsp. cinnamon, optional
Cream together butter and both sugars. Add eggs, mixing well. Stir in bananas. Dissolve soda in sour cream. Add flour, salt and cinnamon to batter alternately with sour cream mixture until well blended. Pour into greased 10x15 baking sheet.  Bake at 350 degrees F for 20-25 minutes. Cool completely before frosting.

Frosting:
6 oz. cream cheese (I use 8 oz. because I can't find a 6 oz. cream cheese)
4 tbsp. butter, softened
2 tbsp. milk or cream (I use milk)
2 cups powdered sugar (I use 2 1/2 to 3 cups because I like thicker frosting)
1 tsp. vanilla extract
Mix all ingredients together with electric mixer.  A mixer will give you a fluffier frosting than mixing by hand.  Spread over cool bars.