Lava Cakes

Chocolate Lava Cake

Three soft chocolate cake layers filled with glossy chocolate lava and finished with silky chocolate buttercream.

Prep

1 hour

Bake

24–27 minutes

Total

About 3 hours, including cooling and chilling

Yield

One 3-layer 8-inch cake

Jump to recipe How to make it

A note from my kitchen

Before you bake this

This chocolate lava cake is built for the moment the first slice is lifted away. Soft cocoa cake, smooth chocolate buttercream, and a glossy center come together in every forkful.

Dutch-process and natural cocoa give the cake and frosting a full, rounded chocolate flavor. Hot coffee blooms the cocoa, while espresso powder deepens the finish without making the cake taste like coffee.

The cake batter comes together in one bowl. The lava and buttercream can both be prepared ahead, which makes the final assembly much calmer.

Save me a slice ;)

Read this first

The quick notes.

Flavor

Deep cocoa, dark chocolate, vanilla bean, and espresso.

Texture

Soft cake, silky buttercream, and a glossy chocolate center.

Best moment

Cutting the first slice and revealing the chocolate lava between all three layers.

Buttercream

Use plant butter sticks, not tubs. Tubs tend to have more water, which can make buttercream softer and less stable.

Pan check

Pan and oven notes

Even layers

For layer cakes, a scale is the easiest way to divide batter evenly between pans. If you do not have one, eyeballing it is completely fine; just aim for the pans to look as even as possible.

Oven personality

My oven runs very fast, so the lower end of the bake time reflects a fast oven. For layer cakes, sheet cakes, lava cakes, poke cakes, and snack cakes, a slower oven may land near the higher end and, at most, about 5 minutes beyond it. Begin checking at the lower end and use the visual cues in the recipe to decide when the cake is done.

Pan material

I test with Fat Daddio's anodized aluminum pans. Light aluminum heats evenly and gently, while dark metal can brown and set the edges faster. If you use dark metal pans, begin checking a little earlier. Silicone is a poor heat conductor, so cakes and loaves baked in silicone molds usually brown less, set more slowly around the edges, and may need additional time. Because silicone is flexible, place the mold on a rigid baking sheet before filling it, and use the recipe's center-texture, tester, or internal-temperature cues to confirm it is fully baked.

Ingredient notes

Key ingredients

Dutch-process and natural cocoa

Using both gives the cake a deeper color and a balanced cocoa flavor. Sift both powders before adding them so no dry pockets remain in the batter or buttercream.

Hot coffee and espresso powder

The heat blooms the cocoa and brings forward its flavor. Stir the espresso powder into the coffee until completely dissolved before adding it to the batter.

Light corn syrup

A small amount keeps the lava smooth, glossy, and easy to spread once it has cooled.

Dark chocolate

Melt it gently, then let it cool until it is still fluid but no longer warm before streaming it into the buttercream.

Brand notes

Brands that matter here

For the ingredients where brand choice changes texture, set, or flavor, these are the tested options I use.

Yogurt

Plain unsweetened yogurt

Plain unsweetened yogurt adds moisture, acidity, and body so the crumb bakes up tender without tasting tangy.

01
Forager Unsweetened Plain Yogurt
02
Silk Plain Unsweetened Yogurt

Milk

Milk affects how smoothly a batter, filling, or frosting comes together. Soy milk and Ripple tend to emulsify well because their protein and fat help create a creamy, cohesive finish.

01
Silk Original Unsweet
02
Plain unsweetened soy milk
03
Ripple Original
04
Oatly Barista Edition

Butter sticks

Plant butter sticks

Use plant butter sticks, not tubs, especially for buttercream and fillings that need to hold their shape.

01
Country Crock Plant Butter Sticks
02
Violife Plant Butter Sticks
03
Earth Balance
04
Miyoko's

Heavy cream

Heavy cream affects silkiness, looseness, and how buttercream or filling sets after chilling.

01
Country Crock Heavy Plant Cream
02
Silk Heavy Whipping Cream Alternative

Cocoa

Cocoa powders

Use the cocoa style called for in the recipe. The Cocoa Trader is my favorite black cocoa; Majestic is my deep, dark pick; Ghirardelli natural cocoa is accessible and dependable for classic chocolate flavor.

01
The Cocoa Trader black cocoa
02
Majestic cocoa powder
03
Ghirardelli natural cocoa powder

Testing notes

Why this works

Why the batter is mixed in one bowl

Whisking the sugars with the wet ingredients first helps them begin to dissolve. The sifted dry ingredients then go directly into the same bowl, keeping the method simple without sacrificing an even crumb.

The batter will be thin

The hot coffee loosens the batter considerably. That fluid texture is expected and helps produce soft, moist chocolate layers, so do not add more flour.

Choose the lava consistency before assembly

The lava thickens as it cools. A thicker filling is easier to contain and is my recommendation for beginning layer-cake bakers. If fully chilled lava is too firm, whisk in milk 1 teaspoon at a time until it spreads slowly and smoothly.

Keep the filling cool

The lava must be completely cool before it touches the buttercream. Warm filling can soften the dam and weaken the structure of the cake.

How it comes together

Small things that matter

Tips for the best cake

Weigh the batter into the pans for layers that bake and stack evenly.

Sift the cocoa powders every time they are used; cocoa holds small lumps that are difficult to whisk out later.

Use cool cake layers for assembly. If they feel delicate, refrigerate them briefly before leveling or stacking.

Keep the lava below halfway up the buttercream dam. Reserve any extra to spoon over individual slices.

For clean slices, chill the assembled cake until firm and wipe the knife between cuts.

Before you slice

Texture and serving notes

Let chilled slices sit at room temperature for 20–30 minutes so the cake and buttercream soften.

Serve any remaining chocolate lava on the side for an extra spoonful over each slice.

Keep it good

Storage

Fridge

Store the assembled cake covered in the refrigerator for up to 4 days.

Counter

The cake layers can be baked one day ahead, wrapped well, and kept at room temperature or refrigerated.

Airtight

The lava can be made up to 3 days ahead and refrigerated in an airtight container. Whisk it smooth before assembling.

Recipe FAQ

Questions that come up

Can I make the lava thicker for an easier assembly?

Yes. Let it chill until it holds a slow, spreadable consistency. A thicker lava is easier to keep inside the buttercream dam and is the best choice for a first lava cake.

Does the coffee make the cake taste like coffee?

No. The coffee and espresso powder deepen the cocoa flavor; they do not create a distinct coffee flavor in the finished cake.

Can I use dairy ingredients?

Yes. I test my recipes with non-dairy butter, cream, milk, and yogurt, but you can use the dairy equivalents you have on hand.

Recipe card