These look so moist and amazing – Here’s what you’ll need to make them:
Ingredients:
Banana Bread Bars:
1-1/2 c. sugar
1 c. sour cream
1/2 c. butter, softened
2 eggs
1-3/4 (3 or 4) ripe bananas, mashed
2 tsp. vanilla extract
2 c. all purpose flour
1 tsp. baking soda
3/4 tsp. salt
1/2 c. chopped walnuts (optional)
Brown Butter Frosting:
1/2 c. butter
4 c. powdered sugar
1-1/2 tsp. vanilla extract
3 tbsp. milk
Do It And How 
I just made some of these banana bars, and they’re SO delicious, moist, and addictingly dense!
Here are mine!
http://thekitchenkook.blogspot.com/2013/01/moist-banana-bars-with-brown-butter.html