Gluten-Free Chocolate Cake with Sour Cream Recipe

❤️ Sandi’s Recipe Summary

The Quick Bite: This gluten-free chocolate cake has been refined over years to be consistently moist and delicious. It uses simple pantry ingredients and sour cream for extra richness. I tested it with several 1:1 gluten-free flour blends so you know which ones work best.

This cake has become a family favorite and is often requested for birthdays. Bakeries have told me they use this recipe for groom’s cakes because it reliably produces a moist, chocolatey result.

The recipe debuted in 2017 and has improved as my gluten-free baking techniques evolved.

A Note From My Kitchen

I’ve tested this recipe many times and adjusted it to keep the cake moist and tender. I recommend letting the batter rest 15–20 minutes so the rice flour softens—especially important with grittier blends like some versions of Bob’s 1:1. If you try a flour blend I haven’t tested, adjust liquids a tablespoon at a time until the batter has the proper consistency. I also tested a dairy-free version using a Measure-for-Measure style blend with successful results; see the substitutions section for details.

Ingredient Notes:

For exact ingredient amounts see the recipe card below.

Gluten-Free Flour Blends Tested

• Tested blends: Bob’s Red Mill 1-to-1 and King Arthur Measure-for-Measure. Both performed well; other blends may work but could require small moisture adjustments.
• Reader-tested: Pamela’s Artisan Blend has been reported to work well by readers.

Other key ingredients

• Binder: If your blend lacks xanthan or guar gum, add 1 teaspoon.
• Cocoa powder: I prefer brands with strong chocolate flavor—sift if lumpy.
• Sour cream: Full-fat sour cream keeps the cake tender and moist; plain yogurt can substitute.
• Eggs: Use large eggs for structure and lift.
• Butter: Unsalted butter is recommended for the cake; you can use oil for a dairy-free version (not for the frosting).
• Milk: Almond milk worked in testing; choose a neutral plant milk if making the cake nut-free—avoid canned coconut milk.
• Leavening: Baking powder is used here; use baking soda if your cocoa is natural rather than Dutch-processed.
• Cream cheese: Bring to room temperature for the creamiest frosting.

Substitutions

• Dairy-free: Use dairy-free cream cheese and vegan butter, and swap sour cream for dairy-free yogurt.
• Nut-free: Replace almond milk with soy or another neutral plant milk.
• Gum-free: Use a DIY gluten-free flour blend that doesn’t rely on xanthan or guar.
• Butter-free: Replace butter in the cake with a light-flavored oil; keep butter in the frosting or use vegan butter for dairy-free frosting.
• Sour cream substitute: Plain yogurt works well if you don’t have sour cream.

Step 1: Preheat the oven to 350°F and set the rack to the middle position. Combine dry ingredients in a large bowl; sift cocoa if it has lumps.

Step 2: Whisk dry ingredients together. If your mix lacks a binder, add 1 teaspoon xanthan gum.

Step 3: Whisk wet ingredients in a separate bowl. Slightly melted butter blends smoothly.

Step 4: Add wet ingredients to dry and fold with a large spoon just until combined—do not overmix to preserve a light texture.

You can bake the batter in mini layer pans, regular cake pans, a 9×13 sheet pan, or as cupcakes—bake time varies by pan size. If using mini pans, they make building layer cakes easy.

Step 5: Grease pans with a gluten-free baking spray and fill with batter. Bake at 350°F—mini pans took about 20 minutes in testing, but always test with a toothpick. When a toothpick inserted in the center comes out clean, the cake is done.

Step 6: Let the cake rest in the pan for 5 minutes, then invert onto a cooling rack. Cool completely before frosting to prevent the frosting from melting; refrigerate to speed cooling if needed.

Step 7: Make the chocolate cream cheese frosting while the cake cools. Beat room-temperature cream cheese and butter, add cocoa and powdered sugar, then whip until light and fluffy.

How to frost this cake like a pro

1. Level cake domes with a serrated knife or cake leveler for even layers.
2. Place the first layer flat side down and add a dollop of frosting on your cake board or stand to prevent sliding.
3. Spread an even layer of frosting, add the next layer, and lightly press to set.
4. Apply a thin crumb coat all over, chill 20–30 minutes, then add a final generous layer of frosting.
5. Use an offset spatula and bench scraper to smooth sides while rotating the cake for a clean finish.

Make it fancy

• Top with chocolate curls or shavings for a professional look.
• Add gluten-free sprinkles or other certified-safe toppings if desired.

Love This Recipe?

I’d love to hear how your cake turned out and which gluten-free flour blend you used—your feedback helps other bakers succeed.