Frosted Brownie Blondies
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This small batch of chocolate Frosted Brownie Blondies are a cross between a brownie and blondie, The fudgy chocolate you love in a brownie combined with the butterscotch goodness of a blondie. The bars are finished with a creamy chocolate butter-free frosting.

Frosted Brownie Blondies
Full disclosure: this recipe happened by accident. A happy accident, as it turns out. I tried to get fancy and cook a butterscotch sauce for what was originally supposed to be my butterscotch and nuts blondies for two recipe.
Wouldn’t you know it – the butterscotch sauce wasn’t cool enough when I added the chocolate chips. So you can guess what happened next. I decided to just go with it, and BAM! These little frosted brownie blondies were born.
And just for good measure, I’ve gone ahead and frosted these delightful dessert bars. And I will be upfront and proud to say that the chocolate frosting is made without butter!
Have I left you inspired for more blondie recipes? Try my peanut butter and chocolate chip small batch blondies for the ultimate gooey treat. Or, go gluten free and whip up a batch of my almond flour chocolate cherry blondies for two.

What is a Brownie Blondie
Something delicious, obviously. Kidding aside, they are simply a joining of a brownie and a blondie. Here are some of the differences:
- Brownies typically use granulated sugar. These use brown sugar – just as you would a blondie.
- Blondies usually only have intact chocolate chips. The chocolate chips in these brownies have been melted along with the brown sugar (more on that in a moment).
- Brownies may include cocoa powder for an extra chocolate flavor. We are not using that here. I wanted the mixture of flavors to come through with this recipe (i.e. chocolate + butterscotch).
The result is a fudgy, soft bar – that still has that classic brownie crackly top – that may have you questioning why you haven’t tried these before!

Baking in a Loaf Pan
One of the essential kitchen tools when baking small batch desserts is the 9-inch x 5-inch loaf pan. Depending on how you slice your brownies (or other baked treats you may bake in the pan), you can get 2, 4, 6 or even 8 slices of goodness.
Because bars are pretty indulgent, I sliced them into smaller servings for 8. Though, when you eat two at a time, you still go through them pretty quickly.
You could certainly use a 6-inch square or round pan, but most likely you have a loaf pan already. If not, I’ve included a link to the one I use above!


Frosted Brownie Blondies
by Erin Cernich
Equipment
Ingredients
Brownie Blondies
- ½ cup light brown sugar
- 3 tablespoons unsalted butter
- 1 tablespoon water
- ⅓ cup semi-sweet chocolate chips
- ½ teaspoon vanilla extract
- 1 large egg, room temperature
- ½ cup all-purpose flour
- ½ teaspoon baking powder
- ¼ teaspoon salt
Instructions
Brownie Blondies
- Preheat oven to 350F degrees and adjust oven rack to the middle position. Line a 9×5 inch loaf pan with a piece of parchment paper to fit the length of the pan, and long enough the hang over the sides. This creates a sling to lift the brownies out of the pan.
- In a small saucepan, heat the brown sugar, butter, water (this helps the sugar to dissolve evenly and not burn) and chocolate chips over medium heat until the sugar has melted – about 3 minutes. Remove from the heat and stir in the vanilla extract. Let cool to room temperature. Add the egg and whisk for about 1 minute to aerate and blend the ingredients well.½ cup light brown sugar, 3 tablespoons unsalted butter, ⅓ cup semi-sweet chocolate chips, ½ teaspoon vanilla extract, 1 tablespoon water
- Sprinkle (or sift) the flour, baking powder, and salt over the wet ingredients. Mix until no dry streaks remain.½ cup all-purpose flour, ½ teaspoon baking powder, ¼ teaspoon salt, 1 large egg, room temperature
- Pour the batter into the prepared pan and spread evenly. Bake for 20 to 22 minutes, or until a toothpick inserted in the middle comes out with moist crumbs. Cool the brownies in the pan set on a wire cooling rack for 10 minutes. Then lift out of the pan and cool completely on the wire rack.
- Frost cooled brownies and cut into desired slices. The brownie blondies can be covered and kept at room temperature for up to 5 days.
Nutrition Estimates
TRY THESE SMALL BATCH RECIPES NEXT!

About the Author …
Hi, I’m Erin! With years of experience baking for two in my own small household, I know about the love for desserts without the leftovers. I’ve tested, written, and photographed every one of the 300+ recipes on my website. And even had some of my desserts featured on Taste of Home, The Spruce Eats, ELLE, Parade, and more! From traditional to gluten free desserts for two, I have the recipe for you.
Click here to learn more about me →




Made these today, turned out great! I made them vegan by substituting vegan butter for the regular butter and aquafaba for the egg. Thanks for the recipe! Will make these again for sure!
Thank you Helena! So glad that you enjoyed the blondies and thanks for letting me know they worked out when made vegan!
I made these yesterday for our 4th of July festivities, and they turned out great! I live in Denver and often struggle to bake at altitude so happy to find your site. Look forward to trying more of your recipes!
Hi Jen – So happy to hear you liked them! These may be one of my fav’s – I like the mix of brownie/blondie. And good to meet a fellow Coloradoan! Baking at altitude is a bit of challenge, but I’m slowly figuring it out 🙂