Don't you love it when you can make something with ingredients you already have in your kitchen? It's wonderful.      We buy banana's on a weekly basis, and I think I do it so I can let them get ripe and bake with them rather than eat them individually. I make a mean banana bread (click  here  for the recipe) but I decided to switch it up a bit and try something new and I'm glad I did!         Let's get our ingredients list going...     Blondie Ingredients:    1/2 cup unsalted butter, melted  1 cup dark brown sugar  1/4t salt  1 large egg  2t vanilla  2t cinnamon  1 cup flour  1 medium-large ripe banana    Frosting Ingredients:     1/4 cup butter  6T dark brown sugar  2T milk  dash of salt  1t vanilla  1 cup powdered sugar    Stir it up, baby!     Preheat oven to 350. Line 8x8 baking pan with foil (make sure to let some hang off the sides so you can pull the blondies out easily when they'er done) and spray with cooking spray.   Start with the Blondie Ingredients...