Gluten-Free Flourless Chocolate Cake

This decadent flourless chocolate cake relies on melted chocolate and butter for its rich, fudgy texture. Enhanced with espresso powder and unsweetened cocoa, it delivers intense chocolate flavor in every bite. The cake bakes to a dense, brownie-like consistency that's naturally gluten-free. Perfect for dinner parties or special occasions when you want an elegant dessert that's surprisingly simple to make. The double boiler method ensures smooth melting without scorching, while the inverted cooling technique creates a beautiful presentation-ready top.
Ingredients
- 3 large eggs, room temperature
- 4 ounces semi-sweet baking chocolate, such as Ghiradelli or Baker's
- ½ cup unsalted butter, sliced into tablespoons
- ⅝ cup granulated sugar
- ½ cup unsweetened cocoa powder
- ½ teaspoon espresso powder, or instant coffeeinstant coffee1:1
Use same amount, provides similar depth
- 1 teaspoon vanilla extract
Instructions
- 1
Preheat oven to 375°F and grease an 8-inch cake pan with flour, adding parchment paper to the bottom
- 2
Whisk eggs lightly in a small bowl to break up yolks
- 3
Fill saucepan with 2-3 inches water and bring to boil over medium heat
- 4
Break chocolate into heat-safe bowl, add butter, and place over boiling water to create double boiler
- 5
Reduce heat to medium low and stir constantly until chocolate and butter melt smooth
- 6
Remove from heat and stir in sugar
- 7
Add beaten eggs to chocolate mixture and stir until completely combined
- 8
Stir in espresso powder and vanilla extract
- 9
Sift cocoa powder over batter and mix until smooth
- 10
Pour batter into prepared pan and bake for 25 minutes until top looks solid
- 11
Cool 5 minutes, run knife around edges, then invert onto serving plate
- 12
Remove pan and parchment, allow to cool completely
Tips
Use room temperature eggs for easier mixing and smoother batter texture
Create a proper double boiler by ensuring the bowl doesn't touch the water below
Test doneness by checking that the top looks solid rather than wet or shiny
Good to Know
covered at room temperature for up to 4 days
can be made 1 day ahead, store covered at room temperature
dust with powdered sugar or cocoa, serve with raspberries or whipped cream
Common Mistakes
avoid getting water into chocolate mixture to prevent seizing
don't skip parchment paper or cake may stick to pan
wait full cooling time before removing from pan to prevent breaking
Substitutions
FAQ
Can I use milk chocolate instead of semi-sweet?
Yes, but reduce sugar by 2-3 tablespoons as milk chocolate is sweeter than semi-sweet chocolate.
What if I don't have espresso powder?
You can substitute instant coffee at the same ratio, or omit entirely for pure chocolate flavor.
How do I know when the cake is done?
The top should look solid and set, not wet or shiny. It may crack slightly which is normal.