I used natural applesauce so it was about 100 calories per cup.
Next, mix in your sugar, vanilla, sour cream, baking soda, and baking powder.
Don't worry if it bubbles a bit, that's just the baking soda mixing with the fruit.
After that, mix in the egg and mashed bananas. 2 large ones, or 3 medium ones should be about right.
Lastly, mix in your 2 cups of flour and spread evenly into a jellyroll pan.
Bake for 25 minutes and 350 degrees. When they're still warm cover with the frosting.
Enjoy your delicious banana bars :)
Banana Bars
1/4 c. softened butter
1 c. applesauce
1/3 c. sugar
1 tsp. vanilla
1 1/2 tsp. baking powder
1/2 tsp. baking soda
1/4 tsp. salt
1 egg
1 c. mashed banana
1/4 c. sour cream
2 c. flour
Preheat the oven to 350 and grease your 15x10 jellyroll pan. Blend softened butter and applesauce. Mix in the sugar, sour cream, vanilla, baking powder, soda, and salt, scraping down the sides. Next, blend the egg and bananas into the batter. Mix in the flour one cup at a time and pour the batter into the greased jellyroll pan. Bake for 25 minutes or until a toothpick comes out clean.
Melt-in-your-Mouth Frosting
1/4 c. butter
1 tsp. vanilla
3 tbsp. milk (almond milk works well too)
2 c. powdered sugar
Melt the butter in a medium saucepan. Bring it to a boil over medium heat and leave on the burner until it turns to a nice brown color and starts to smell really nice. There will be little flecks of brown in it and that is the stage you should remove it from the burner and start mixing in the other ingredients. Whisk in the vanilla and milk. Whisk the sugar in cup by cup. Immediately pour the frosting on the bars and spread out evenly.