My Favorite Banana Blondies

Rich decadent banana blondies with caramel icing

My Favorite Banana Blondies recipe ~  think banana bread meets blondies, this easy dessert is rich, dense, and fudgy, with a to-die-for caramel frosting!

These blondies are utterly addicting - proceed with caution!

Banana Blondies with Caramel Icing

These Banana Blondies are as addictive as anything I’ve had in my life,

and I have to say it took me a little bit by surprise — they look so innocent! But the combination of the very dense banana cake and the very sweet caramel icing is intense. I tested the recipe on 2 consecutive days, and my self control failed miserably. I spent 48 hours in a banana blondie induced coma. Proceed with caution.

I ate these warm out of the oven…I ate them chilled from the fridge the next day…suffice it to say I’ve had them every which way and every way was amazing.

Simple Banana Blondies

Self control issues aside, I’m so happy with this recipe, it’s reliable and easy to do. if you’re a banana lover, or just happen to know one, this is a must try. There is a ton of banana flavor packed into these slim bars, which also surprises me because I only used one banana. They are moist and dense, almost like a banana fudge, (if that thought doesn’t blow your mind.)   They’re good.

Banana Blondies with Caramel icing

If you’ve got one ripe banana, the rest of these easy bars come together from the pantry.

The frosting is a quick cooked caramel, but don’t let that scare you, that just means you melt some butter, brown sugar, and a touch of cream or milk together in a saucepan and heat it to a boil, then whisk in powdered sugar. It’s not fussy at all, but it does set up quickly, so plan to slather it on the cake right away. You can actually cut these and eat them warm, which is unusual for a frosted dessert.

Banana Blondies with Brown Sugar Frosting

Do yourself a favor….make these. 😉

Simple Banana Blondies with Caramel Icing

Reader Rave ~

“I’ve baked many things over the years and I have to say these are some of the best. Really delicious.” ~ Shar

Banana Blondies with Caramel Icing
3.82 from 376 votes

Banana Blondies

My Favorite Banana Blondies ~  think banana bread meets blondies, this easy dessert is rich, dense, and fudgy, with a to-die-for caramel frosting!
Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 25 minutes
Yield 9 servings
Author Sue Moran


  • 1/2 cup 1 stick unsalted butter, melted
  • 1 cup packed brown sugar
  • 1 large egg
  • 1 1/2 tsp vanilla extract
  • 1/4 tsp salt
  • 1 cup all purpose flour
  • 1/2 cup well mashed banana about 1 to 1 1/2 bananas

caramel icing

  • 1/4 cup 1/2 stick unsalted butter
  • 1/2 cup packed brown sugar
  • 2 Tbsp cream or milk
  • 1 cup powdered confectioner's sugar (possibly a little bit more)


  • Set the oven to 350F
  • Beat the butter and sugar together for several minutes until smooth and fluffy. Beat in the egg and vanilla.
  • Mix in the mashed banana, and then the flour and salt. Mix just until everything is well blended, don't over mix.
  • Spread into an 9x9 square baking dish. I like to spray the dish with baking spray and also line it with parchment paper with long ends so I can lift it out to frost and cut it easily.
  • Bake for 25 to 30 minutes, until the center is set. I check with a toothpick.
  • Let the cake cool most of the way before you make the frosting.
  • To make the caramel frosting put the butter, brown sugar and milk or cream in a small saucepan and melt the butter, whisking all the time. Continue whisking until the mixture comes to a boil, then turn off the heat and add the sifted powdered sugar, whisking until completely smooth. You may need to add a little bit more powdered sugar if it seems very thin.
  • Spread it immediately onto the cake, it will set up very quickly.
  • Enjoy!

Cook's notes

I found this recipe at My Real Life Kitchen and she got it from Cookies and Cups
The nutritional information for recipes on this site is provided as a courtesy and although tries to provide accurate nutritional information, these figures are only estimates.


Don’t forget to pin my favorite banana blondies!

banana blondies pin


More evidence of my banana obsession…

Pineapple Banana Bread

Banana Walnut Scones

Banana Cake with Spiced Vanilla Buttercream

Banana Walnut Bread with Nutmeg Glaze

Banana Poppy Seed Cake with Vanilla Bean Frosting

Copy Cat Trader Joe’s ‘Gone Bananas’

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    Leave a Reply

    Please rate this recipe!

  • Reply
    sandy ryan
    July 20, 2021 at 1:56 pm

    I have frozen ripe bananas in my freezer can I thaw these and use them at the amount in the recipe? I guess I would have to drain the liquid? Thanks for a reply

    • Reply
      Sue Moran
      July 20, 2021 at 5:44 pm

      Yes, I’d thaw and mash, you probably don’t have to drain them.

  • Reply
    February 9, 2021 at 3:46 pm

    5 stars
    These are AMAZING! I had overripe bananas that I needed to use up and stumbled upon this recipe – I’m so glad I did! The blondies have a great banana flavor and the frosting is sweet but not too sweet. Great, super easy way to use up some old bananas!

    • Reply
      Sue Moran
      February 16, 2021 at 4:09 pm

      Thanks Tara, glad you enjoyed them!

  • Reply
    January 15, 2021 at 1:39 pm

    5 stars
    I made these today since I have over rip bananas. SOOO good! It took a lot of will power not to eat more than 1 square. I was worried the frosting would be too sweet, but it was perfect. May sprinkle toasted walnuts on next time.

  • Reply
    August 16, 2020 at 11:13 am

    Can I use dark brown sugar instead of light? And if so, should I modify the amount?

    • Reply
      August 16, 2020 at 2:38 pm

      Yes, I usually feel comfortable using either one. No difference in amount.

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