This chocolate fudge frosting is a thick, glossy, no cook frosting made with 1 cup of butter, ¾ cup of cocoa powder, 3 cups of powdered sugar, ¼ cup of heavy cream or milk, and vanilla. It comes together in about 10 minutes with a mixer and frosts a 2 layer 9 inch cake or 24 cupcakes.
The fudgy texture comes from a high ratio of cocoa to sugar and a long final whip. Adding the sugar slowly, alternating with small splashes of cream, keeps the frosting dense and smooth instead of stiff or grainy, so it spreads like the old fashioned fudge icing on a sheet cake.
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- Covers: a 2 layer 9 inch cake or 24 cupcakes
- Time: about 10 minutes, no stovetop
- Ratio: 1 cup butter, ¾ cup cocoa, 3 cups powdered sugar, ¼ cup cream
- Best cocoa: Dutch processed for the darkest, richest flavor
- Make ahead: up to 5 days in the fridge, then rewhip
- Use it on: layer cakes, sheet cakes, cupcakes, brownies, and bars
How Much Fudge Frosting for a Layer Cake
One batch makes enough chocolate fudge frosting for a 2 layer 9 inch cake: a generous layer in the middle, plus the top and sides. It also covers about 24 cupcakes with a standard swirl, or a 9×13 inch sheet cake with a thick layer.
For a 3 layer cake, an 8 inch cake with tall piped borders, or if you want to use it as both filling and frosting with extra to spare, make 1½ batches. If I am stacking a tall chocolate cake, I chill the frosting for 20 minutes before assembling. It firms up slightly and keeps the layers level.
Fudge Frosting vs Chocolate Buttercream
Both start with butter, but they eat differently. A classic chocolate buttercream uses more sugar and less cocoa and is whipped light and airy. This fudge frosting uses a lot of cocoa for its sugar, so it is denser, darker, and less sweet, with a soft, fudgy set and a gentle sheen on the surface.
Old fashioned cooked fudge icing is a third style: sugar, milk, and chocolate are boiled on the stove and poured over the cake while warm. This recipe gives a similar rich, fudgy flavor without the stovetop or a candy thermometer. For a lighter frosting, try my dark chocolate buttercream; for a pourable finish, use chocolate ganache frosting.
Start With the Right Butter
Butter is the backbone. Use it softened, unsalted, and beat it for 2 to 3 minutes until light and fluffy. I have used both salted and unsalted over the years; salted muddied the flavor slightly, while unsalted lets the cocoa stand out.
Room temperature really matters. Cold butter breaks the mixture and leaves little lumps, and butter that is too warm loses structure. I leave mine on the counter for about 30 minutes, no shortcuts.
Dutch Processed or Natural Cocoa?
Natural cocoa gives a lighter, slightly sharper flavor. Dutch processed cocoa is darker and deeper. I have tested both side by side: the Dutch cocoa version tasted like old fashioned fudge icing, while the natural cocoa version leaned slightly dry. Either works, but Dutch processed is my pick when I want a dramatic, rich frosting for a classic yellow cake or a chocolate layer cake.
Sift the cocoa straight into the creamed butter so there are no clumps, then beat until creamy and uniform.
Mixing Fudge Frosting Step by Step
Add the powdered sugar one cup at a time, alternating with a tablespoon or two of cream, and beat well after each addition. Adding it slowly gives the butter time to absorb it; adding it fast leaves clumps and dry patches. Starting low on the cream gives you more control, especially on humid or warm days.
Add the vanilla and a pinch of salt and beat for another minute, scraping the bowl. Adjust the texture: a teaspoon of cream at a time if it is too thick, a little more powdered sugar if it is too soft. Then give it a full 2 to 3 minutes on medium high. This is the part that often gets rushed, and it is where the frosting turns from merely mixed to glossy, smooth, and spoon licking good.
Heavy Cream or Milk?
I have tried both. Heavy cream gives more body, so the frosting is thick, pipeable, and holds its shape on cakes that sit out at a party. Whole milk makes it a little lighter but more likely to soften in a warm room. For a quick batch of cupcakes at home, milk is fine. For a layer cake or anything traveling, I use cream.
Frosting Problems and Fixes
- Grainy: the sugar or cocoa was not sifted, or the frosting needed a longer final whip.
- Lumpy or broken: the butter was too cold. Let the bowl warm slightly and beat again.
- Too soft or greasy: the butter was too warm. Chill the bowl for 15 minutes and rewhip.
- Too stiff to spread: beat in cream 1 teaspoon at a time.
- Tastes dry or dusty: natural cocoa can do that. Switch to Dutch processed and add a little more cream.
- Too sweet: add a pinch more salt.
Cakes, Cupcakes, and Brownies to Frost
Spread it over my chocolate sheet cake or a Texas sheet cake for a classic party dessert, or use it on sour cream chocolate cake. It is a natural match for a yellow birthday cake, and it pipes neatly onto coffee cupcakes.
For brownies, spread a thin layer over cocoa powder brownies, then swirl a spoonful of chocolate ganache through it for a layered finish. If you want a frosting made just for brownies, see my brownie frosting. Between cake layers, it pairs well with homemade chocolate pudding or chocolate cake filling.
Making It Ahead
Store the frosting in an airtight container in the fridge for up to 5 days. Let it come back to room temperature, then rewhip for a minute or two. It softens again without losing structure, and the quick beat brings back the gloss. Rewhipping is essential if you want a smooth piped finish.
Fudge Icing Questions
How do you make chocolate fudge icing for a cake?
Beat 1 cup soft butter, sift in ¾ cup cocoa, then add 3 cups powdered sugar a cup at a time with splashes of cream. Add vanilla and salt and whip for 2 to 3 minutes.
Is fudge frosting the same as chocolate frosting?
Fudge frosting is a denser, darker chocolate frosting with more cocoa and less sugar than a typical chocolate buttercream.
Do I have to cook fudge frosting?
Not this one. It is a no cook frosting made with a mixer. Cooked fudge icing is a different, stovetop style.
Can I use it on brownies?
Yes. Spread a thin layer over cooled brownies, then chill briefly so it sets before cutting.
How far ahead can I make fudge frosting?
Up to 5 days, stored airtight in the fridge. Bring it to room temperature and rewhip before using.
Save this chocolate fudge frosting to your cake board so it is ready for the next birthday. If you try it, tell me in the comments how it turned out or what you frosted with it.
Chocolate Fudge Frosting
This chocolate fudge frosting is a thick, glossy, no cook frosting made with unsalted butter, unsweetened cocoa powder, powdered sugar, heavy cream or milk, vanilla, and a pinch of salt. It takes about 10 minutes and makes enough to frost a 2 layer 9 inch cake or 24 cupcakes. The sugar is added slowly with splashes of cream and the frosting gets a long final whip, so it turns dense, smooth, and fudgy instead of grainy. Use it as chocolate fudge frosting for cake, fudge icing for sheet cakes, cupcakes, and brownies, or as a fudge cake filling. Dutch processed cocoa gives the richest flavor. Make it up to 5 days ahead in the fridge and rewhip before using.
Ingredients
- 1 cup (226g) unsalted butter, softened to room temperature
- ¾ cup (75g) unsweetened cocoa powder, sifted
- 3 cups (360g) powdered sugar, sifted
- ¼ cup (60ml) heavy cream or milk, plus more as needed
- 2 teaspoons vanilla extract
- Pinch of salt
Instructions
- CREAM THE BUTTER: In a large mixing bowl, beat the softened butter with an electric mixer on medium speed for 2 to 3 minutes, until it becomes light, smooth, and fluffy.
- ADD COCOA POWDER: Sift the cocoa powder directly into the bowl to avoid lumps, then beat until fully combined and the mixture looks creamy and uniform.
- INCORPORATE SUGAR AND CREAM: Add the powdered sugar one cup at a time, alternating with a tablespoon or two of cream. Beat well after each addition. Continue this process until all the powdered sugar and cream have been mixed in.
- ADD VANILLA AND SALT: Pour in the vanilla extract and add a pinch of salt. Beat the frosting for another minute, scraping down the sides of the bowl to make sure everything is evenly mixed.
- ADJUST CONSISTENCY: If the frosting is too thick, add a little more cream, one teaspoon at a time. If it’s too thin, mix in a bit more powdered sugar until the desired consistency is reached.
- FINAL WHIP: Beat the frosting on medium-high speed for 2 to 3 minutes until it becomes extra fluffy and glossy. This step gives the frosting a smooth, spreadable texture that holds its shape.
Notes
For deeper chocolate flavor, use Dutch processed cocoa powder. Use heavy cream for a thicker frosting that holds up on cakes that sit out; milk makes it slightly softer. One batch frosts a 2 layer 9 inch cake or 24 cupcakes; make 1½ batches for a 3 layer cake. Frosting can be made ahead and stored in an airtight container in the refrigerator for up to 5 days. Let it come to room temperature and rewhip before using.
Nutrition Information
Yield
24Serving Size
1Amount Per Serving Calories 146Total Fat 9.0gSaturated Fat 5.5gTrans Fat 0.0gUnsaturated Fat 2.8gCholesterol 24mgSodium 12mgCarbohydrates 16gFiber 0.5gSugar 14gProtein 1.0g
Is it best to use a whisk attachment, paddle or either one? I want to make this for my grandsons upcoming birthday cake so I want to make it perfectly 💜
Use the paddle. It gives a smooth, dense fudge frosting. The whisk beats in extra air, which leaves bubbles and makes it harder to spread smoothly. Have a lovely birthday.