Banana Blondies with Brown Butter Icing Recipe
Introduction
These Banana Blondies with Brown Butter Icing are a delightful twist on traditional blondies, blending the natural sweetness of ripe bananas with rich brown butter flavor. Topped with a smooth, decadent icing, they make a perfect treat for any occasion.

Ingredients
- 1/2 cup Butter, melted (preferably salted)
- 3/4 cup Muscovado sugar
- 1 Egg
- 1.5 tsp Vanilla extract
- 1.5 cups All-purpose flour
- 1.5 tsp Baking powder
- 2 Bananas, mashed
- 1/2 cup Mini dark chocolate chips
- 4 tbsp Butter (for icing)
- 2/3 cup Icing sugar
- 2-3 tbsp Milk, lukewarm
- 1/2 tsp Vanilla bean paste or vanilla extract
Instructions
- Step 1: Preheat your oven to 180°C (350°F). Line an 8-inch square baking pan with parchment paper or grease it well to prevent sticking.
- Step 2: In a large bowl, combine the melted butter and muscovado sugar until well mixed.
- Step 3: Add the egg and vanilla extract to the bowl, mixing thoroughly to combine all ingredients.
- Step 4: Whisk in the all-purpose flour, baking powder, and mashed bananas carefully until the batter is smooth and consistent.
- Step 5: Fold in the mini dark chocolate chips gently to evenly distribute them throughout the batter.
- Step 6: Transfer the thick batter into your prepared pan, spreading it out evenly.
- Step 7: Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
- Step 8: Allow the blondies to cool in the pan for 5-10 minutes, then transfer them to a cooling rack to cool completely before icing.
- Step 9: To make the brown butter icing, melt 4 tablespoons of butter in a small saucepan over low heat. The butter will bubble and foam, then begin to brown and smell nutty. Remove from heat once browned and cool slightly. Optionally, strain to remove milk solids.
- Step 10: Whisk the icing sugar and vanilla bean paste (or vanilla extract) into the browned butter. Add lukewarm milk tablespoon by tablespoon until the mixture is smooth and has a thick, pourable consistency.
- Step 11: Pour the icing evenly over the cooled blondies and spread it with a spatula. For an extra touch, sprinkle chocolate-coated caramel balls on top if desired.
- Step 12: Slice, serve, and enjoy your delicious banana blondies with brown butter icing!
Tips & Variations
- Use very ripe bananas for the best natural sweetness and moist texture.
- Swap mini dark chocolate chips for white chocolate or chopped nuts to change the flavor profile.
- If you prefer a thinner icing, add more milk a little at a time until you reach your desired consistency.
- For a dairy-free version, use a plant-based butter substitute and non-dairy milk.
Storage
Store the blondies in an airtight container at room temperature for up to 3 days. For longer storage, keep them refrigerated for up to one week. When ready to eat, let refrigerated blondies come to room temperature or warm briefly in the microwave. The icing may firm up when chilled but softens nicely with gentle warming.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use regular sugar instead of muscovado sugar?
Yes, you can substitute muscovado sugar with brown sugar or dark brown sugar. Muscovado adds a rich, molasses flavor, but brown sugar will still yield tasty results.
How do I know when the brown butter is ready for the icing?
The butter is ready when it turns a golden-brown color and releases a nutty aroma. It will bubble and foam first, then start to brown. Be careful not to burn it—remove from heat as soon as you see the brown color developing.
Print
Banana Blondies with Brown Butter Icing Recipe
- Total Time: 45 minutes
- Yield: 9–12 blondies (depending on slice size) 1x
Description
Delight in these moist and flavorful Banana Blondies with a rich brown butter icing. Made with mashed bananas, muscovado sugar, and dark chocolate chips, these blondies are baked to perfection and topped with a luscious, nutty brown butter frosting that adds a gourmet touch to this classic treat.
Ingredients
Blondies
- 1/2 cup Butter, melted (salted butter recommended)
- 3/4 cup Muscovado sugar
- 1 Egg
- 1.5 tsp Vanilla extract
- 1.5 cups All-purpose flour
- 1.5 tsp Baking powder
- 2 Bananas, mashed
- 1/2 cup Mini dark chocolate chips
Brown Butter Icing
- 4 tbsp Butter
- 2/3 cup Icing sugar
- 2–3 tbsp Milk, lukewarm
- 1/2 tsp Vanilla bean paste or Vanilla extract
- Optional: chocolate-coated caramel balls for garnish
Instructions
- Preheat Oven: Preheat your oven to 180°C (350°F). Line an 8-inch square baking pan with parchment paper or grease it well to prevent sticking.
- Mix Butter and Sugar: In a large bowl, combine the melted butter and muscovado sugar, stirring until well blended.
- Add Egg and Vanilla: Incorporate the egg and vanilla extract into the butter and sugar mixture, mixing thoroughly for uniform consistency.
- Combine Dry Ingredients and Bananas: Whisk in the all-purpose flour and baking powder, then fold in the mashed bananas. Mix until just combined without overmixing to keep the batter tender.
- Fold in Chocolate Chips: Gently fold the mini dark chocolate chips into the batter, ensuring even distribution throughout.
- Transfer and Bake: Pour the thick batter into the prepared pan and bake in the preheated oven at 180°C for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean.
- Cool Blondies: Allow the blondies to cool in the pan for 5 to 10 minutes, then transfer them to a cooling rack to cool completely before icing.
- Prepare Brown Butter Icing: In a small saucepan set over low heat, melt the butter. Continue cooking until it bubbles, foams, and turns a golden brown color, releasing a nutty aroma. Remove from heat and optionally strain to remove milk solids.
- Mix Icing Ingredients: Whisk the brown butter with icing sugar and vanilla bean paste (or extract). Gradually add lukewarm milk, one tablespoon at a time, until a smooth and viscous icing consistency is achieved.
- Ice the Blondies: Pour and evenly spread the brown butter icing over the cooled blondies. Optionally, sprinkle chocolate-coated caramel balls on top for added texture and flavor.
- Serve: Slice into squares and serve. Enjoy the rich, banana-infused blondies with their decadent brown butter frosting.
Notes
- Muscovado sugar adds a rich molasses flavor; you can substitute with light brown sugar if unavailable.
- Ensure bananas are ripe and well mashed for optimal sweetness and moisture.
- Use lukewarm milk to help the icing blend smoothly without clumping.
- If you prefer a dairy-free version, substitute butter with vegan butter and milk with a non-dairy alternative.
- Chocolate-coated caramel balls are optional but add an extra crunch and flavor dimension.
- Allow blondies to cool completely before icing to prevent the frosting from melting.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Keywords: banana blondies, brown butter icing, chocolate chip blondies, banana dessert, baked blondies, easy dessert recipe

