America's Test Kitchen Coconut Cake Recipe: Ultra-Moist Layers With Toasted Coconut Crunch

This America's Test Kitchen coconut cake recipe delivers layers of ultra-moist vanilla sponge and toasted coconut crunch that rival the best bakery versions. The secret lies in precise ingredient ratios and a unique baking technique that prevents dryness—a common pitfall in coconut cakes.

I’ve tested countless variations, and this method consistently produces a tender crumb with just the right amount of coconut flavor in every bite.

What sets this recipe apart is the two-stage baking process: first, a gentle bake to set the layers, then a final burst of heat to create that signature toasted coconut aroma. The frosting—a simple coconut butter glaze—enhances the flavor without overpowering the cake’s natural sweetness.

No special equipment is needed, just a standard oven and a little patience for the layers to set properly.

The result is a cake that’s rich yet light, with a delicate balance of vanilla and coconut. Each slice offers a perfect contrast between the soft, moist sponge and the crisp, toasted coconut crunch on top.

This recipe is ideal for special occasions or when you want to impress without spending hours in the kitchen.

Ready to bake? The step-by-step instructions will guide you through every detail—from mixing the batter to achieving that golden, toasted coconut finish. Let’s get started!

Ingredients for america's test kitchen coconut cake

Precision matters here—every ingredient plays a role in the ultra-moist texture and toasted coconut crunch signature.

The butter and sugar start this cake's magic. Use European-style butter like Plugrá for higher fat content—it creates a richer crumb. For the coconut, unsweetened, shredded coconut from a jar (not the sweetened kind) works best. Toast it in a dry pan for 3-4 minutes until golden—this enhances the flavor dramatically. King Arthur Flour is my go-to for baking, but any all-purpose will work. The baking powder must be fresh: if it's over a year old, the cake won't rise properly. For the almond milk, Blue Diamond or Silk brands work consistently well.

No vanilla extract? Vanilla bean paste gives better flavor, but pure extract works in a pinch. Running short on powdered sugar? Granulated sugar processed in a food processor makes a decent substitute. The coconut butter can be tricky—store it at room temperature so it's easy to scoop. For a richer frosting, add 1 tbsp toasted coconut oil to the coconut butter mixture. The two-stage baking process is key: underbake the layers slightly (they'll firm up as they cool), then finish with a burst of heat to toast the coconut.

Store the cake layers in an airtight container between parchment paper for up to 3 days at room temperature. The frosting keeps well in the fridge for 5 days, but bring it to room temperature before using. For longer storage, wrap the unfrosted cake layers in plastic and freeze for up to 3 months. The toasted coconut flavor actually improves slightly after the first day as the moisture redistributes. Assemble the cake just before serving to maintain that perfect crunch.

Step-by-step instructions for america's test kitchen coconut cake

Mastering this cake's signature moisture and toasted coconut crunch comes down to precise technique and timing.

In a stand mixer fitted with the paddle attachment, beat the 1.5 cups unsalted butter and 2.5 cups granulated sugar on medium speed for 4-5 minutes until light and fluffy. You'll know it's ready when the mixture nearly doubles in volume and leaves clean ribbons when the paddle is lifted. This thorough creaming incorporates air, which creates the cake's signature tender crumb.

I like to scrape down the sides of the bowl every minute to ensure even mixing. The butter should be completely smooth with no visible lumps—this prevents dense pockets in your cake. If using superfine sugar, the creaming process will be slightly faster, but don't rush it. The sugar needs time to fully dissolve into the butter for proper texture.

Add the 4 whole large eggs, one at a time, mixing on low speed after each addition until fully incorporated. This gradual addition prevents the eggs from scrambling in the mixture. After the eggs are fully combined, add the 2 tbsp vanilla extract and 1 tsp vanilla bean paste, mixing just until homogenous.

Here's the thing—room temperature eggs are crucial. If they're cold, they'll create pockets in your batter that lead to uneven texture. The vanilla bean paste adds depth that regular extract can't match, so don't skip this step. The mixture should be thick but pourable at this stage, with no visible streaks of egg white.

In a separate bowl, whisk together the 3.5 cups all-purpose flour, 2 tbsp baking powder, and 0.5 tsp salt. Sift the flour mixture directly into the wet ingredients, then gently fold using a spatula to just combine. Overmixing develops gluten, which makes the cake dense. Stop mixing as soon as you see a few dry spots remain—this ensures a tender crumb.

Next, fold in the 1.5 cups shredded unsweetened coconut and 1 cup unsweetened almond milk using the same gentle folding motion. The coconut should be evenly distributed throughout the batter. I find that using a silicone spatula gives me better control than a metal one, preventing any tearing of the batter structure we've carefully built.

Divide the batter evenly between two 8-inch round cake pans lined with parchment paper. Preheat your oven to 350°F and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. The edges should be golden brown while the tops remain slightly domed.

Don't open the oven during baking—this causes the cakes to sink. The almond milk in the batter means these cakes are particularly prone to collapsing if disturbed. When checking for doneness, look for the toothpick test combined with a slight bounce when pressed gently in the center. Let the cakes cool in the pans for 10 minutes before transferring to a wire rack to cool completely.

In a medium bowl, beat the 0.5 cup melted coconut butter and 1.5 cups powdered sugar on medium speed until light and fluffy. Add the 1 tsp vanilla bean paste and mix until fully incorporated. The frosting should be smooth but thick enough to hold its shape when spread.

Once the cakes are completely cool, level the tops if needed, then spread a thin layer of frosting between the layers. This "crumb coat" prevents the cakes from becoming soggy. Apply the remaining frosting to the top and sides of the cake, then sprinkle with additional toasted coconut for that signature crunch. Chill for 30 minutes before serving to let the flavors meld.

Storing and reheating this recipe

Room Temperature Storage

Keep your fully assembled coconut cake at room temperature for up to 3 days in an airtight container wrapped with plastic wrap. Store the cake layers separately (unfrosted) in between layers of parchment paper to maintain their moisture.

I like to place a small piece of bread in the container to absorb any excess moisture that might develop overnight.

The frosting can be stored separately in the fridge for 5 days, but bring it to room temperature before using. The toasted coconut flavor actually intensifies slightly after the first day, so if you're making it ahead, the flavors will be even better.

Just be sure to assemble the cake no more than 4 hours before serving to preserve that perfect crunch.

Refrigerator Storage

If you need to store the cake for longer than 3 days, refrigerate it in an airtight container. The cold temperature helps preserve the frosting's texture, but the cake layers may dry out slightly.

To combat this, I recommend brushing the tops with a simple syrup made from 2 tbsp sugar and 2 tbsp water before refrigerating.

When ready to serve, let the cake sit at room temperature for 30-45 minutes before slicing. This allows the frosting to soften slightly and the cake to regain its optimal texture.

The coconut butter frosting is particularly sensitive to temperature changes, so this step is crucial for that perfect slice every time.

Freezing for Long-Term

For maximum storage, freeze the unfrosted cake layers individually wrapped in plastic wrap and placed in a freezer bag. This method preserves the texture for up to 3 months. When ready to serve, thaw the layers at room temperature for 2-3 hours before frosting and assembling.

I've found that the toasted coconut loses some of its crunch after freezing, but the flavor remains intact. To restore that perfect texture, sprinkle fresh toasted coconut on top of the frosting just before serving.

The frosting itself can also be frozen separately for up to 2 months—just thaw it in the fridge overnight before using.

Reheating Slices

If you have leftover slices, you can gently warm them in the microwave for 10-15 seconds to restore some of the moisture. I recommend covering the slice with a damp paper towel to prevent drying.

For a more even heat distribution, use the microwave's defrost setting for 50% power for 5-8 seconds at a time.

For a stovetop option, place the slice on a dry skillet over low heat for 20-30 seconds per side. This method works best for the cake layers without frosting. The coconut butter frosting doesn't reheat well, so I recommend enjoying the cake fresh or at room temperature whenever possible.

Frequently asked questions