How to Make Banana Bread Brownies:

Mix we Ingredients: Cream butter and sugar: Beat in the sour cream and eggs, bananas and vanilla extract. Add dry ingredients: flour, baking soda, salt, and mix just until moistened. Stir in walnuts, if using. Bake: Pour batter into a 9×13 inch baking pan or half sheet pan. For a 9×13’’ pan, bake for 23-28 minutes or until a toothpick inserted in the center comes out clean or with few crumbs. Make the glaze: Heat butter over medium heat and allow it to come to a simmer until it turns a delicate brown (watch carefully so you don’t burn the butter). Remove from heat immediately. Whisk in the powdered sugar, vanilla extract and milk until smooth. Pour Glaze over Bars: This is easiest when the bars are warm.  Spread gently with the back of a spoon.

Recipe Variations:

Add nuts: add chopped walnuts or pecans to the batter before baking.Add chocolate chips: add mini milk or semi sweet chocolate chips.Change the frosting: I love the brown butter frosting but this cream cheese frosting would also be delicious.Healthier banana bread bars: cut the sugar in half for a lighter version and use 3-4 Tbs of butter for the frosting instead of 6.

Make Ahead And Freezing Instructions:

To make ahead: bake and frost them one to two days ahead of time.  Store them covered, in the refrigerator. To freeze: allow them to cool completely and freeze them frosted or unfrosted right in the pan.  Cover them well with plastic wrap and aluminum foil before freezing and freeze for up to 3 months.  Allow to thaw completely before serving. FOLLOW ME on FACEBOOK, TWITTER, INSTAGRAM and PINTEREST for more great recipes! I originally shared this recipe June 2017. Updated January 2021. Process photos by Nikole from The Travel Palate. This post contains affiliate links.

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