Banana Bread Brownies Homemade

Featured in Irresistible Sweet Treats.

Rich banana brownies with brown butter frosting. Takes 40 minutes total. Perfect for using ripe bananas.
Clare Greco
Updated on Wed, 12 Feb 2025 16:18:23 GMT
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Let me share my favorite way to rescue those overripe bananas sitting on your counter. These aren't just brownies, and they're not quite banana bread - they're this magical hybrid that combines the best of both worlds. The brown butter frosting? That's the game-changer that'll make you forget every other banana dessert you've ever had.

Just last weekend, I brought these to a family gathering, and my aunt who "doesn't like banana bread" had three pieces. That's the kind of conversion story this recipe creates.

Essential Ingredients

  • Ripe bananas: The spottier, the better - they're sweeter and more flavorful
  • Sour cream: This is the secret to keeping everything incredibly moist
  • Real butter: No substitutes here, especially for that frosting
  • Pure vanilla extract: Splurge on the good stuff, you'll taste the difference
  • Light brown sugar: Creates that caramel note in the frosting
  • Fresh powdered sugar: Check for lumps before using
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Banana Bread Brownies Recipe | recipesbyclare.com

Detailed Instructions

For the Base:
Start with room temperature ingredients - yes, even the eggs matter here. When you're creaming that butter and sugar, don't rush it. You're looking for light and fluffy, like the inside of a cloud. Those overripe bananas should practically mash themselves; that's when you know they're perfect.
The Mixing Magic:
Here's where gentle hands make all the difference. When you add the dry ingredients, mix just until they disappear. Think of it like tucking them in, not beating them into submission. Over-mixing is the enemy of tender brownies.

The first time I made these, I rushed the frosting and ended up with tiny powdered sugar lumps. Now I know that patience makes perfect - especially when it comes to that brown butter transformation.

Making The Frosting

This is where the magic happens. Watch that butter like a hawk as it browns - the difference between perfectly nutty and burnt is seconds. When you see those little golden flecks at the bottom of the pan, that's your signal.

Perfect Pairings

A cold glass of milk is non-negotiable here. Sometimes I warm a piece for about 10 seconds in the microwave, and it gets this almost pudding-like quality that's absolutely dreamy.

Keeping Them Fresh

Store these beauties in an airtight container. They'll stay moist for days thanks to the bananas and sour cream, though good luck keeping them around that long!

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Banana Bread Brownies Homemade | recipesbyclare.com

Every time I make these, I think about how something so simple - overripe bananas and basic pantry ingredients - can transform into something this special. They've become my go-to solution for potlucks, bake sales, or just when someone needs cheering up. Because let's be honest, nobody can stay sad with a warm banana bread brownie in hand.

Frequently Asked Questions

→ How ripe should bananas be?
Very ripe bananas with brown spots work best for sweetness and moisture.
→ Why brown the butter?
Creates nutty, caramel flavor in frosting.
→ Can I freeze these?
Freeze unfrosted up to 3 months. Add frosting after thawing.
→ Why not overmix?
Overmixing develops gluten making brownies tough instead of tender.
→ How to store?
Keep in airtight container in fridge up to 5 days.

Banana Bread Brownies Homemade

Soft, moist banana brownies with a decadent brown butter frosting. Combines the best of banana bread and brownies.

Prep Time
10 Minutes
Cook Time
30 Minutes
Total Time
40 Minutes

Category: Sweet Treats

Difficulty: Intermediate

Cuisine: American

Yield: 20 Servings (20 brownies)

Dietary: Vegetarian

Ingredients

→ Brownies

01 1 1/2 cups granulated sugar
02 1 cup sour cream
03 1/2 cup butter, softened
04 2 large eggs
05 3 ripe bananas, mashed
06 1 tablespoon vanilla extract
07 2 cups all-purpose flour
08 1 teaspoon baking soda
09 1/2 teaspoon salt

→ Frosting

10 4 tablespoons butter
11 1/4 cup light brown sugar
12 2 cups powdered sugar
13 1 teaspoon vanilla extract
14 1/4 cup milk

Instructions

Step 01

Preheat oven to 375°F. Spray 9x13 pan with non-stick spray.

Step 02

Cream butter and sugar. Add sour cream, eggs, bananas, and vanilla.

Step 03

Stir in flour, baking soda, and salt until just combined. Don't overmix.

Step 04

Pour into pan and bake 25-30 minutes until toothpick comes out clean.

Step 05

Brown butter with brown sugar. Add powdered sugar, vanilla, and milk until smooth.

Step 06

Pour frosting over warm brownies. Let set before cutting.

Notes

  1. Uses ripe bananas
  2. Stores well in fridge
  3. Don't overmix batter

Tools You'll Need

  • 9x13 baking pan
  • Hand or stand mixer
  • Large skillet

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy (butter, sour cream)
  • Contains eggs
  • Contains gluten (flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 270
  • Total Fat: 10 g
  • Total Carbohydrate: 44 g
  • Protein: 2 g