The Ultimate Gluten-Free Dulce de Leche Filled Brownies (Easy Box Mix Hack!)
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If you are looking for a decadent, show-stopping dessert that just happens to be gluten-free, you’ve found it. These Individual Dulce de Leche Brownies start with a reliable mix but end with a gourmet, salted-caramel-meets-chocolate finish.

The secret? A “well” pressed into the warm brownie that holds a generous pool of creamy dulce de leche, all hidden under a cloud of homemade chocolate buttercream.
Why You’ll Love These Individual Brownies
- Portion Controlled: Perfect for parties or “She Shared” gatherings.
- Textural Heaven: Fudgy brownie, gooey center, and silky frosting.
- Easy Hack: We use Krusteaz Gluten Free Double Chocolate Brownie Mix as the base to save time without sacrificing flavor.

Ingredients You’ll Need
Brownie Base:
- 1 box Krusteaz Gluten Free Double Chocolate Brownie Mix
- 1/3 cup vegetable oil
- 1/4 cup water
- 1 egg

Filling:
- 1/2 cup Dulce de Leche (canned or jarred, but I LOVE La Serenisima brand which is made in Argentina but you can buy it in the States at Walmart!!! )
Homemade Chocolate Frosting:
- 1/2 cup (1 stick) unsalted butter, softened
- 2 cups powdered sugar, sifted
- 1/3 cup cocoa powder, sifted
- 2–3 tbsp milk (adjust for desired consistency)
- 1 tsp vanilla extract (optional)
Step-by-Step Instructions
1. Prep and Bake
Preheat your oven to 325°F.
Mix the Krusteaz brownie mix, oil, water, and egg until smooth. Instead of a standard 8×8 pan, scoop the batter into individual foil baking tins.
Pro-Tip: Make sure to place all the tins onto a sturdy cookie sheet before putting them in the oven. This ensures they bake evenly and stay stable when you remove them to create the dulce de leche wells. Bake for approximately 20 minutes.



2. Create the “Dulce Well”
This is the most important step! While the brownies are still warm from the oven, take a small juice glass or a round measuring spoon and gently press into the center of each brownie to create an indentation. Let them cool completely in the tins.


3. Fill with Dulce de Leche
Once cooled, pipe or spoon about a tablespoon of dulce de leche into each well. The caramel-like richness pairs perfectly with the double chocolate chips in the mix.


4. Whip the Frosting
In a medium bowl, use a hand mixer to whip the softened butter and milk together until they are fully combined and creamy. Gradually add the sifted powdered sugar and cocoa powder. By whipping the butter and milk first, you create a smooth base that carries the cocoa flavor perfectly without any lumps.




5. Decorate and Serve
Pipe a high swirl of chocolate frosting over the dulce de leche center to “seal” it in. I used a Wilton 1M piping tip for that classic look. For a professional touch, serve them in their gold foil tins with a small wooden spoon or fork.

Expert Tips for the Perfect Brownie
- Don’t Overbake: Gluten-free treats can dry out quickly. Pull them when they still look slightly soft.
- Sift Your Dry Ingredients: For the frosting, don’t skip the sifting! It’s the difference between grainy frosting and the silky-smooth peaks you see in these photos.
- Storage: These stay fudgy for up to 3 days in an airtight container at room temperature.

For more chocolaty goodness, check out Chocolate Chip Cookies, Raspberry Chocolate Chip Muffins, and Mint Brownies.
