Easy dark chocolate fudge frosting for cake recipes, cupcakes, and more! This chocolate fudge icing with cocoa powder, bittersweet chocolate, and a hint of coffee is the only old fashioned chocolate fudge frosting you need!
Heat heavy cream in a saucepan over medium heat until it is hot, but not boiling. You'll begin to see little bubbles forming around the edges of the pan.
⅔ cup heavy cream
Reduce heat to low. Sift in cocoa powder, powdered sugar, and espresso powder. Whisk well until fully combined and smooth.
Add in chopped chocolate and cubed butter. Stir until melted and mixture is smooth. Stir in vanilla extract.
10 oz bittersweet chocolate, ¾ cup salted butter, 2 teaspoon vanilla extract
Pour mixture into a heatproof bowl and cover with plastic wrap so that it is touching the top of the mixture -- this way it won't develop a film on top.
Let frosting cool at room temperature for around 45 minutes -- less for a thinner frosting, and more for a thicker frosting. If necessary, you can pop it in the fridge for as long as necessary to thicken it up.
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Notes
Servings: This recipe makes enough chocolate fudge frosting to frost a single layer 8-inch or 9-inch cake, a Bundt cake, or 12 cupcakes. If you double the recipe, it's enough for a two-or three layer 8-inch cake, a two-layer 9-inch cake, or 24 cupcakes.Update: Based on reader experiences with the frosting coming out too liquidy, I did some testing and increased the chocolate and powdered sugar measurements.