Preheat oven to 350F degrees. Grease 2, 8-inch round baking pans and line the bottom of the pan with parchment paper.
Mix the dry ingredients for the cake together and whisk well in a large mixing bowl.
In a separate bowl, whisk together all the wet ingredients except the coffee.
Slowly add the wet ingredients to the dry ingredients. Once fully incorporated, add the hot coffee. This will make the batter very thin.
Divide the batter evenly between both cake pans. Bake for 35 minutes or until a toothpick inserted in the center comes out clean.
Allow the cakes to cool completely, then turn them out onto a cooling rack. Make sure the cakes are fully cooled before adding the frosting.
For the Frosting
Melt semi-sweet chocolate in a double boiler pan. Stir until smooth. Remove from heat to cool.
Beat the room temperature butter with an electric mixer and paddle attachment until noticeably paler in color. Slowly add powdered sugar, salt, and vanilla on low speed until it’s completely smooth.
Whisk the sour cream into the chocolate until fully incorporated.
Add the chocolate and sour cream mixture into the butter mixture and beat on low speed until everything is fully combined.
Frost the cake and then place in the refrigerator to keep cool until serving.
Notes
Using Other Pans When making a gluten free chocolate cake, you don’t have to use 8” round pans like we’ve used. You can use whatever size or shape pan you wish. Here are some other possibilities:Cupcake pan Line your cupcake pan with cupcake papers and bake for approximately 15 minutes or until a toothpick inserted in the center comes out clean. Bundt cake pan Be sure to thoroughly grease your Bundt cake pan before adding the cake batter. Bake for approximately 35 minutes or until a toothpick inserted in the center comes out clean. 9x13 cake pan If you prefer the traditional 9x13 cake pan, there’s nothing wrong with that. Your cake will still have the same delicious outcome. Just grease the pan and bake for approximately 35 minutes or until a toothpick inserted in the center comes out clean. 9x9 square pan A 9x9 square pan works well for a smaller cake. If you’re only making one 9x9 square pan, you can cut the cake recipe in half to have the appropriate amount of gluten free cake batter to fill just one pan. Bake for 25-35 minutes or until a toothpick inserted in the center comes out clean.
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