If you are searching for the ultimate gluten-free chocolate cake recipe, this decadent layered cake delivers everything chocolate lovers crave. Moist, tender cake layers are packed with deep chocolate flavor from Dutch-processed cocoa, enriched with sour cream and chocolate pudding for an incredibly soft crumb, and studded with mini chocolate chips for extra indulgence. Finished with a luxurious homemade chocolate buttercream frosting, this gluten-free chocolate cake is perfect for birthdays, holidays, celebrations, or any time you need an impressive dessert.
One of the biggest challenges with gluten-free baking is creating a cake that remains moist and fluffy without becoming dry or crumbly. This recipe solves that problem by combining a carefully balanced blend of gluten-free flours with rich dairy ingredients and plenty of moisture. The result is a bakery-style chocolate cake that nobody will believe is gluten-free.
Prep Time
30 minutes
Bake Time
30 minutes
Cooling and Decorating Time
1 hour 30 minutes
Total Time
2 hours 30 minutes
Servings
12 to 16 servings
Gluten-Free Chocolate Cake
¼ cup oat flour
½ cup cornstarch
½ cup rice flour
1 cup glutinous rice flour
½ cup tapioca flour
2½ teaspoons baking powder
½ teaspoon baking soda
½ teaspoon xanthan gum
½ teaspoon kosher salt
⅔ cup unsweetened Black Dutch-processed cocoa powder
1⅓ cups granulated sugar
1 cup neutral oil or 2 sticks unsalted butter, softened
4 large eggs
1 cup whole milk or buttermilk
3 tablespoons pure vanilla extract
8 ounces sour cream
3 ounces instant chocolate pudding mix
½ package mini chocolate chips
Optional: ¼ cup chocolate liqueur or chocolate syrup for brushing the cake layers
Rich Chocolate Buttercream
2 sticks unsalted butter, softened
1 stick salted butter, softened
4 cups powdered sugar
¾ cup unsweetened cocoa powder
8 tablespoons heavy cream, plus more if needed
1½ teaspoons pure vanilla extract
Prepare the Cake Pans
Position an oven rack in the center of the oven and preheat the oven to 350°F.
Grease two 8-inch round cake pans generously with butter. Line the bottoms with parchment paper rounds and lightly grease the parchment paper as well. This helps ensure the cakes release easily after baking.
Mix the Dry Ingredients
In the bowl of a stand mixer fitted with the paddle attachment, combine the oat flour, cornstarch, rice flour, glutinous rice flour, tapioca flour, baking powder, baking soda, xanthan gum, salt, cocoa powder, sugar, and instant chocolate pudding mix.
Mix on low speed until everything is evenly distributed and there are no visible lumps.
Add the Wet Ingredients
Add the oil or softened butter, eggs, milk or buttermilk, vanilla extract, and sour cream.
Mix on low speed until the ingredients begin to combine. Increase the speed to medium-high and beat for 2 to 3 minutes until the batter becomes smooth, thick, and creamy.
Fold in the mini chocolate chips using a spatula. The batter will be rich and silky.
Bake the Cake
Divide the batter evenly between the prepared cake pans.
Use an offset spatula to smooth the tops.
Bake for approximately 28 to 32 minutes, rotating the pans halfway through baking. The cakes are done when a toothpick inserted into the center comes out clean or with only a few moist crumbs attached.
The cake should spring back lightly when touched.
Cool the Cakes
Allow the cakes to cool in their pans for 10 minutes.
Run a knife around the edges and carefully turn the cakes out onto wire racks. Remove the parchment paper and allow the cakes to cool completely before frosting.
Make the Chocolate Buttercream
While the cakes cool, prepare the frosting.
Place the softened unsalted butter and salted butter into a large mixing bowl.
Beat on medium-high speed for 3 to 5 minutes until very light, fluffy, and pale in color.
Gradually add the powdered sugar and cocoa powder, mixing on low speed after each addition.
Pour in the heavy cream and vanilla extract.
Increase the mixer speed to medium-high and beat for another 3 minutes until the frosting becomes smooth, creamy, and spreadable.
If the frosting is too thick, add additional heavy cream one tablespoon at a time. If it is too soft, refrigerate for 15 to 20 minutes before using.
Assemble the Cake
Using a long serrated knife, carefully level the tops of the cakes if necessary.
Cut each cake horizontally into two layers, creating four cake layers total.
Place the first layer on a cake stand or serving platter. If desired, lightly brush the layer with chocolate liqueur or chocolate syrup to add extra moisture and flavor.
Spread approximately ¼ cup of chocolate buttercream evenly over the layer.
Repeat the process with the remaining layers, stacking and frosting between each layer.
Crumb Coat the Cake
Apply a very thin layer of frosting over the entire cake to trap loose crumbs.
Refrigerate for 15 to 20 minutes to allow the crumb coat to set.
Finish Frosting
Remove the cake from the refrigerator.
Spread the remaining chocolate buttercream generously over the top and sides of the cake.
Use an offset spatula or cake scraper to create a smooth finish or decorative swirls.
Allow the cake to rest at room temperature for about 1 hour before serving. This helps the frosting soften slightly and allows the flavors to develop.
Slice and serve.
Why This Gluten-Free Chocolate Cake Works
The combination of glutinous rice flour, tapioca flour, rice flour, oat flour, and cornstarch creates a balanced gluten-free flour blend that produces a tender crumb without any gritty texture.
The sour cream adds richness and moisture, while the instant chocolate pudding helps create a soft, bakery-style texture that stays fresh for days. Dutch-processed cocoa powder delivers a deep, intense chocolate flavor, and mini chocolate chips add pockets of melted chocolate throughout every slice.
The chocolate buttercream is equally impressive, combining three sticks of butter with cocoa powder and cream to create a frosting that is silky, rich, and perfectly spreadable.
For an easier version, you may substitute the flour blend with 2¾ cups gluten-free all-purpose flour that already contains xanthan gum. If using a blend with xanthan gum included, omit the additional xanthan gum from the recipe.
Buttermilk creates a slightly tangier flavor and softer crumb than whole milk.
For extra chocolate flavor, add 1 teaspoon espresso powder to the dry ingredients.
Store the frosted cake covered at room temperature for up to 3 days or refrigerate for up to 5 days.
The cake layers can be wrapped tightly and frozen for up to 3 months before assembling.
For special occasions, garnish the finished cake with chocolate curls, chocolate shavings, or a drizzle of chocolate ganache for an elegant bakery-style presentation.
This moist gluten-free chocolate cake with chocolate buttercream frosting is rich, decadent, and packed with chocolate flavor, making it one of the best gluten-free chocolate cake recipes for birthdays, celebrations, and holiday gatherings.
