Chocolate Birthday Cake

on Apr 16, 2026

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This is the ultimate Chocolate Cake recipe. It is rich, fudgy, and everything celebratory! Layers of moist chocolate cake and smooth chocolate frosting combine to give you a cake fit for royalty (and you don’t even need a mixer!).

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Side view of a chocolate cake with a slice being removed.

Chocolate Cake Recipe

I haven’t been this excited about cake in, well, probably ever. This chocolate cake has serious ‘heavenly expensive restaurant dessert’ vibes but you literally don’t even need a mixer to make it. The cake layers are moist, fluffy, and tender and absolutely slathered with a rich + smooth frosting that really just *takes the cake*. Top it all off with sprinkles (ofc) and be prepared to make this for all of your people on their special day.

Ingredients

*You can find instructions and exact quantities in the recipe card at the bottom of this post.

Cake

All-purpose flour – Yep, regular ol’ AP flour will do the trick here!
Granulated sugar
Cocoa powder – I used dutch processed, but you can use unsweetened or whatever your preference is.
Baking powder
Baking soda
Salt
Eggs
Buttermilk – The lactic acid in the buttermilk reacts with the baking soda to create carbon dioxide, meaning you get a fluffy cake with a higher rise. Thanks, science!
Vanilla extract – The vanilla provides a flavor foundation for the whole cake.
Hot water
Salted butter, melted – I prefer salted butter when baking. You can easily swap in unsalted butter if that is your preference.

Chocolate Frosting

Salted butter, softened – I use salted butter, but you can sub in unsalted butter if you’d prefer. If you make the swap, I recommend adding an extra pinch of salt to the frosting.
Cocoa powder
Heavy whipping cream + more to thin, room temp – The whipping cream will help make a nice + thick frosting.
Powdered sugar
Vanilla extract

Side view of a chocolate birthday cake on a cake stand.

How to Make Chocolate Birthday Cake

Preheat the oven to 350°F (180°C). Grease two 9-inch round cake pans and line with parchment paper. Set aside.
In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt. Set aside.
In a separate bowl, whisk together the eggs, buttermilk, and vanilla. Set aside.
Whisk the hot water and melted butter into the dry ingredients until well combined.
Add in the egg mixture, whisking until the batter is smooth.
Divide the batter evenly among the two prepared pans. Bake for 24–27 minutes or until the cake feels firm when tapped.
Allow the cakes to cool completely in the pans, then refrigerate while making the frosting.
Make the frosting by creaming the butter until smooth. Add in the cocoa powder and enough cream to bring the mixture together.
Alternate adding 1 cup of powdered sugar with enough cream to bring a thick frosting together, repeating until all of the heavy cream and powdered sugar has been added.
Add the vanilla and whip until smooth.
Frost and layer your cake as desired. Enjoy!
Cover with plastic wrap (or move to a lidded container) and store at room temperature for up to 3 days.

Slices of chocolate birthday cake on the counter.

How should I store leftover chocolate cake?

With your cake completely cool, cover tightly with plastic wrap (or move to a lidded container) and store at room temperature for up to 3 days.

Can I freeze this cake?

You sure can! I recommend cutting the cake into slices and wrapping each with parchment or saran wrap then placing in a ziptop bag to freeze. You can also cover the entire cake tightly with multiple layers of saran wrap and freeze. Freeze for up to 3 months!

Karli’s Kitchen Faves

Here are a few of my favorite kitchen tools that I used to make this recipe!

Parchment paper – You will grease your pan AND line it with parchment paper to make it ultra easy to remove the baked cake.
Offset spatula – I love using an offset spatula to frost the cake because it’s so much easier to get the perfect swirl on top without getting extra frosting on the side of your hand.
Piping bag – These are disposable, meaning you do not have to clean them ha. They are durable and won’t burst and leak your frosting. You do not need to pipe frosting onto this cake, but you can if you’d like to add a little extra decorative flair.
Piping tips – This is a set of my 4 favorite piping tips.
Bowl – I love how giant these are! They’re perfect for mixing up the cake.
Whisk – This is my very favorite silicone whisk. I love that it doesn’t scratch my bowls and it is slightly more flexible for cleaning.
9” cake pans – I am a big fan of Wilton pans because they hold up so well!