Frosted Banana Cake

1/2 cup butter, softened  
1-1/2 cups sugar  
2 eggs  
1 cup (8 ounces) sour cream  
1 teaspoon vanilla extract  
2 cups all-purpose flour  

1 teaspoon baking soda  
1/4 teaspoon salt  
2 medium ripe bananas, mashed (about 1 cup)

In a mixing bowl, cream butter and sugar. Add the eggs, sour cream and vanilla. Combine the flour, baking soda and salt; gradually add to the creamed mixture. Stir in bananas.
Spread into a greased 9x13 inch baking pan (or a larger pan to make this thinner for bars). 

Bake at 350° for 25-30 minutes or until a toothpick inserted near the center comes out clean. Cool.

Frosting:

1 package (8 ounces) cream cheese, softened  
1/2 cup butter, softened  
2 teaspoons vanilla extract  
3-3/4 to 4 cups confectioners' sugar

For frosting, in a mixing bowl, beat the cream cheese, butter and vanilla. Gradually beat in enough confectioners' sugar to achieve desired consistency. Frost bars. Store in the refrigerator. Yield: 3-4 dozen.