Gluten-Free Flourless Chocolate Cake

Prep: 30 minCook: 25 min1 cake (16 slices)mediumAmerican
Flourless Chocolate Cake with Espresso and Cocoa

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

Yield: 1 cake (16 slices)
  • 3 large eggs, room temperature
  • 4 ounces semi-sweet baking chocolate, such as Ghiradelli or Baker's
  • ½ cup unsalted butter, sliced into tablespoons
  • cup granulated sugar
    brown sugar1:1

    Adds slight molasses notes and extra moisture

    Full guide →
  • ½ cup unsweetened cocoa powder
  • ½ teaspoon espresso powder, or instant coffee
    instant coffee1:1

    Use same amount, provides similar depth

  • 1 teaspoon vanilla extract

Instructions

  1. 1

    Preheat oven to 375°F and grease an 8-inch cake pan with flour, adding parchment paper to the bottom

  2. 2

    Whisk eggs lightly in a small bowl to break up yolks

  3. 3

    Fill saucepan with 2-3 inches water and bring to boil over medium heat

  4. 4

    Break chocolate into heat-safe bowl, add butter, and place over boiling water to create double boiler

  5. 5

    Reduce heat to medium low and stir constantly until chocolate and butter melt smooth

  6. 6

    Remove from heat and stir in sugar

  7. 7

    Add beaten eggs to chocolate mixture and stir until completely combined

  8. 8

    Stir in espresso powder and vanilla extract

  9. 9

    Sift cocoa powder over batter and mix until smooth

  10. 10

    Pour batter into prepared pan and bake for 25 minutes until top looks solid

  11. 11

    Cool 5 minutes, run knife around edges, then invert onto serving plate

  12. 12

    Remove pan and parchment, allow to cool completely

Tips

Tip 1

Use room temperature eggs for easier mixing and smoother batter texture

Tip 2

Create a proper double boiler by ensuring the bowl doesn't touch the water below

Tip 3

Test doneness by checking that the top looks solid rather than wet or shiny

Good to Know

Storage

covered at room temperature for up to 4 days

Make Ahead

can be made 1 day ahead, store covered at room temperature

Serve With

dust with powdered sugar or cocoa, serve with raspberries or whipped cream

See pairing guide →

Common Mistakes

Watch

avoid getting water into chocolate mixture to prevent seizing

Watch

don't skip parchment paper or cake may stick to pan

Watch

wait full cooling time before removing from pan to prevent breaking

Substitutions

espresso powder
instant coffee1:1

Use same amount, provides similar depth

Full guide →
semi-sweet chocolate
dark chocolate1:1

Creates more intense flavor, ensure it's baking chocolate

Full guide →
granulated sugar
brown sugar1:1

Adds slight molasses notes and extra moisture

Full guide →
Find more 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.