Perfect Gluten-Free Chocolate Cake (Easy & FUDGY)

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This gluten-free chocolate cake is super rich and fudgy, so easy to make, and truly doesn’t taste like it’s gluten-free! It’s extra moist with the addition of brown sugar and easy homemade buttermilk, and has the perfect chocolate flavor which is amplified by lots of vanilla and hot coffee (or hot water, if you prefer) to bloom the cocoa. Paired with decadent chocolate buttercream, it’s the ultimate cake for any chocolate lover, gluten-free or not. 

Tips for Making the BEST Gluten-Free Chocolate Cake 

Over the years, I’ve received many comments from readers making my cake recipes gluten-free (with success!), simply by swapping the flour in the recipe for gluten-free baking flour. Curiosity finally got the best of me and I had to try the swap for myself, starting with my favorite one-bowl chocolate cake as a base. It turns out that there’s more to gluten-free baking than simply swapping out the flour – I learned a TON during my recipe testing and the result is so worth it: a super moist (but not gummy) texture, perfect rise, and excellent chocolate flavor. Here are a few takeaways from my recipe testing that will be KEY to making the best GF chocolate cake: 

• Use 1:1 Gluten-Free Baking Flour. A gluten-free baking flour like this one will already contain xanthan gum which is necessary for providing structure in a gluten-free cake. I was originally testing this recipe with gluten free all-purpose flour and didn’t realize that the mixturedidn’t contain xanthan gum, which caused my experiments to sink after taking them out of the oven. 
• Use Room Temperature Ingredients. With the exception of the hot coffee, make sure your milk and eggs are at room temperature. This will help the batter come together more easily and prevent overmixing. 
• Whisk the Batter By Hand. When I first started testing this recipe, I was using my stand mixer on low speed and my cakes kept sinking after coming out of the oven. It turns out that using an electric mixer, even at low speed, incorporates too much air! Instead, whisk together this recipe by hand.  
• Use Cake Strips (Optional). Just like my beloved one-bowl chocolate cake recipe, these cakes will dome in the oven unless you use cake strips. I usually just level my cakes when they have domes.

Gluten-Free Chocolate Cake Ingredients

Now that you know the best practices for making the absolute best version of this gluten-free chocolate cake, here are the ingredients I used and info about any substitutions I can recommend, if needed: 

• Whole Milk + Vinegar (DIY Buttermilk). The recipe begins with mixing together whole milk and white vinegar, which creates a homemade buttermilk mixture that contributes to the moist texture of this cake. You can swap the whole milk for dairy-free milk if you want (soy is a great choice), and use either white vinegar or apple cider vinegar. 
• 1:1 Gluten-Free Baking Flour. It’s important to choose a gluten-free baking flour that contains xanthan gum, which acts as an essential binder in gluten-free recipes. I used Bob’s Red Mill 1:1 Gluten-Free Baking Flour but any brand of one to one (or cup for cup) gluten-free flour will work, as long as it contains xanthan gum. 
• Granulated Sugar + Brown Sugar. Both sweeten this cake and contribute to the soft texture, but the brown sugar adds extra moisture because of the molasses it contains. If you’d rather not use brown sugar, you can replace it with an equal amount of granulated sugar.
• Unsweetened Cocoa Powder. The cocoa powder is responsible for the rich chocolate flavor of this cake, and you can use either Dutch-processed or natural unsweetened cocoa powder in this recipe.
• Baking powder + baking soda. Both are used as the leavening agents to help this cake rise. 
• Salt + Vanilla Extract. These enhance the chocolate flavor in this cake, especially the vanilla. I use a whole tablespoon of vanilla and the results are perfect!
• Vegetable Oil. This is an oil-based cake, which makes it extra moist and lends the perfect amount of fat. I use plain vegetable oil, but you can also use melted coconut oil, avocado oil, canola oil, or any neutral oil you prefer. 
• Large Eggs. In gluten-free baking, eggs provide a necessary amount of structure and act as binders for the batter. 
• Hot Coffee. The heat of the coffee at the end of the recipe blooms the cocoa powder, which enriches the chocolate flavor, and causes the ingredients to blend together more smoothly into a thin, uniform batter. The coffee is wonderful for enhancing the chocolate flavor, and you can’t taste it in the final baked cake, but if you’d rather not use coffee you can use an equal amount of hot water. 

How to Make Gluten-Free Chocolate Cake

Step 1: Make homemade buttermilk. Whisk together the vinegar and whole milk and set it aside while you measure the dry ingredients. It will curdle by the time you add it in Step 3, and that’s what we want.

Step 2: Combine the dry ingredients. In a large bowl, whisk together the gluten-free baking flour, sugars, cocoa powder, baking powder, baking soda, and salt.

Step 3: Whisk together the wet ingredients. In a separate medium bowl, whisk together the oil, eggs, vanilla, and homemade buttermilk you made in Step 1. 

Step 4: Combine the wet and dry ingredients. Add the wet ingredients to the dry ingredients and whisk together to combine. 

Step 5: Add the hot coffee. Finally, whisk in the hot coffee. The batter will be very thin.

Step 6: Bake the cakes. Pour the batter evenly into cake pans that have been greased and lined with parchment paper, either three 6-inch pans (as pictured throughout this post) or two 8-inch pans. 

Gluten-Free Chocolate Cake Recipe Video

I whipped up a recipe video for this gluten-free chocolate cake so you can see the whole process:

If you love recipe videos like this one, be sure to check out my YouTube channel! I’ve got a growing collection of cake recipes, decorating tutorials, and Cake Basics over there. Hit the subscribe button on my page so you never miss a new video.

Chocolate Frosting for a Gluten-Free Cake

My favorite chocolate buttercream is already gluten-free (as are nearly all of my frosting recipes), so that’s what I gravitated towards for filling and frosting this cake. It’s SO GOOD – silky smooth, perfectly chocolatey, and just the best pairing for this cake if you want it to be all chocolate. It’s a simple recipe you can make with either Dutch-processed cocoa powder or natural unsweetened cocoa powder, and it comes together in about fifteen minutes. 

After leveling the cake layers, I used the chocolate buttercream to fill and stack them, crumb coat the cake, and frost it with rustic texture. The goal here was to make it look effortless and tempting, and it definitely checks those boxes for me! The frosting technique works with a small angled spatula or a butter knife, and I have a tutorial you can follow if you need some guidance with the frosting. Finally, I added some swirls on top using Wilton Tip 1M and added some gluten-free sprinkles on top, because sprinkles are always a good idea. 

I hope you love this gluten free chocolate cake as much as I do! Let me know what cake flavor you paired it with in the comments below and feel free to tag @sugarandsparrowco on Instagram to show me if you post a photo. I love to see what you create with my recipes!