Frosted Banana Bars

If you like bananas, you’ll LOVE these banana bars. Frosted with the most amazing cream cheese frosting, these moist and rich bars are irresistible!

It’s hard to deny a banana bar covered in frosting! If you love our classic banana bread recipe, you’ll love this bar version that is just as good (or better)!

Banana Bars with cream cheese frosting and banana slice on top

Who loves bananas?

We are definitely obsessed in my family!! We buy 2 bunches a week! YUP. It’s a great snack that the kids love and one that I don’t mind them eating at all. Occasionally, we are left with a few by the end of the week so I’m often baking with those leftover bananas.

The kids love these baked goods just as much! I’m right there with them and love a warm slice of banana bread or a delicious banana muffin in the morning. One recipe I had yet to try was Banana Bars. My mom wanted to try them, and I’m glad she did because they were a hit!

Not sure if it’s the sour cream or loads of butter that make these bars so moist and delicious OR the cream cheese frosting, but either way, they were amazing. They obviously didn’t last long at my family’s house, and have been added to the “recipes to make with over-ripe bananas” list. 😉

Process pictures of banana bar batter making and baking

The Browner, the better

When it comes to baking, the browner and blacker a banana is, the better it will be! A green or yellow banana will never yield a good banana flavor for baking. 

Here are the instructions for using ripened bananas to make these bars:

BARS. In a large mixing bowl, beat your butter with an electric mixer for about 30 seconds. Add sugar, baking soda and salt, then beat until combined. Beat in bananas, eggs, sour cream, and vanilla. Stir in flour. Spread in a greased 15x10x1 baking pan, and bake at 350 for 25-30 minutes. Let cool.

FROSTING. Beat cream cheese and butter until smooth. Beat in powdered sugar and vanilla until combined. Spread over the cooled banana cake base and cut into bars. Decorate as desired!

Process photos of beating and mixing cream cheese frosting

Tips and storing

DECORATING: We like to decorate our bars with banana slices. But be careful you don’t put them on too early because the bananas will get brown. Some other ways you could decorate are:

  • Chopped walnuts
  • Caramel syrup
  • Chocolate chips
  • Chocolate shavings
  • Sprinkles
  • Berries

STORING. You can store unfrosted banana bars at room temperature, but if you put the cream cheese frosting on, they will need to be stored in the refrigerator. Keep them covered, and they can last for up to 5 days.

MAKING AHEAD. Having said that, these can be made in advanced and placed in the fridge. Just frost closer to when you’re serving for the best result. 😉

If you decorate with fruit, I recommend taking it off before storing, and using fresh fruit before serving again.

Close up of banana bar with cream cheese frosting and a banana slice on top

As I mentioned before the bars are so moist and delicious (even without the frosting!!) I promise you’ll love these bars because they are irresistible!

For more banana recipes, check out:

Banana Bar Recipe

5 from 15 votes
If you like bananas, you'll LOVE these frosted Banana Bars. Tender, delicious, and perfect for a crowd, they're irresistible!
Course Dessert
Cuisine American
Prep Time 5 minutes
Cook Time 25 minutes
Total Time 30 minutes
Servings 20
Calories 350 kcal
Author Lil' Luna


  • 1 cup unsalted butter softened
  • cups sugar
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • cups mashed overripe bananas about 3 bananas
  • 2 eggs
  • 1 cup sour cream
  • 1 teaspoon vanilla extract
  • 2 cups all-purpose flour

Cream Cheese Frosting


  • Preheat the oven to 350°F.
  • In a large mixing bowl, beat butter with a hand mixer for about 30 seconds. Add sugar, baking soda, and salt and beat until combined. Add mashed bananas, eggs, sour cream, and vanilla and mix to combine. Add flour and mix to combine.
  • Pour into a greased 11-x-15-inch baking dish and spread evenly.
  • Bake for 25–30 minutes. Let cool in the pan.
  • While the bars cool, make the frosting. In a medium bowl, beat cream cheese and butter with a hand mixer until smooth. Beat in powdered sugar and vanilla and mix until combined.
  • Spread frosting over cooled bars and cut into squares.



STORE. Keep unfrosted Banana Bars at room temperature, but frosted ones need to be stored in the refrigerator. Keep them covered with plastic wrap or in an airtight container for up to 5 days.
Make ahead of time. These can be made in advance and placed in the fridge. Frost closer to when serving for the best result. If decorated with fruit, I recommend taking it off before storing it and replacing it with fresh fruit before serving.
Decorating. We like to decorate our Banana Bread Bars with banana slices. Do not put them on too early because the bananas will get brown.
For a variation, top the bars with chopped walnuts, Caramel Syrup, chocolate chips, chocolate shavings, sprinkles, or berries. Make chocolate chip Banana Bars by adding chocolate chips to the batter!

Pictures for this recipe were re-taken by contributor, Alicia, of The Baker Upstairs

Collage of frosted banana bars with cream cheese frosting

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About Kristyn

My name is Kristyn and I’m the mom of SIX stinkin’ cute kids and the wife to my smokin’ hot hubby, Lo. My mom’s maiden name is Luna, and I’m one of the many crafty “Lil’ Lunas” in the fam. On this site I like to share all things creative - from recipes to home decor to gifts and home decor ideas. Welcome!

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Recipe Rating


  1. 5 stars
    I always have bananas that ripen too quIckly And so i freeze them fOr banana muffins. Ill have to give these bars a try instead. The cream Cheese looks delicious on top.

  2. 5 stars
    The best banana bars I have ever had!! They are so moist & the frosting is to die for!! I will definitely make these again!!

  3. 5 stars
    I think it’s fate that I have ripe bananas sitting on my countertop as we speak. This looks too amazing to wait any longer to try it!

  4. 5 stars
    I absolutely love banana bars and was so excited to try this recipe! They were so easy to make and crazy delicious!

  5. 5 stars
    I buy bananas Just to get over ripe baNanas. I love all the things you can do with them. This recipe is one of them. So good!!!!

  6. 5 stars

  7. 5 stars
    These are so good! They have become highly requested for family gatherings. My dad will let bananas brown just to tell me I need to make them.

  8. 5 stars
    These are moist and flavorful banana bars topped with delicious cream cheese frosting! It’s sinfully rich and boy I’m here to tell you it will become a family favorite!