Coconut Texas Sheet Cake Recipe

This ultra-moist Coconut Texas Sheet Cake uses canned coconut milk and a warm, pourable glaze to deliver rich, tropical flavor in under an hour.

About Ingredients Instructions Servings Tips Substitutes

Why This Recipe Works:

• Emulsified Fat Matrix: Boiling the canned coconut milk with butter melts the solids and evenly distributes the fats, ensuring a velvety crumb without heavy oiliness.
• Starch Gelatinization: Pouring the hot liquid directly into the flour mixture partially cooks the starches, locking in moisture so the cake stays tender for days.
• Warm-Glaze Penetration: Drizzling the hot, liquid icing over the toasted coconut and warm cake allows the sugary glaze to seep into the top layer, binding them together.

I still remember the exact sound of my grandmother’s heavy aluminum sheet pan clattering onto the laminate countertop, its worn edges slightly warped from decades of Sunday dinners. My job was always the same: standing on a wooden stool, wrists dusty with flour, using a wooden spoon to scrape every last bit of warm, sweet glaze from the saucepan before it set.

It was pure magic.

While most people default to the BEST Chocolate Texas Sheet Cake for potlucks, this tropical white-cake variation is hands down my favorite.

The real challenge with a coconut version is getting deep flavor into the crumb without relying on artificial extracts that taste like drugstore suntan lotion. To solve this, we swap the traditional water for a full can of unsweetened coconut milk. Boiling this coconut milk with butter creates a stable, homogenized emulsion before it hits the dry ingredients.

It works beautifully.

When that hot liquid hits the flour, it triggers rapid starch gelatinization. This coaxes the flour into absorbing more liquid, giving the cake its signature tight, velvety crumb. We use Diamond Crystal kosher salt to balance the intense sweetness of the powdered sugar glaze.

If you love an easy coconut cream pie, this sheet cake delivers that same decadent, milky satisfaction with half the effort.

Coconut Texas Sheet Cake

• Publisher RecipeVolt
• Cuisine American
• Category Desserts, Cakes
• Prep Time 15 mins
• Cook Time 25 mins
• Servings 15
• Calories 420 calories
• Rating 4.8 22
• Tags texas sheet cake, coconut cake, sheet cake recipes, easter desserts

Ingredients

• 2 1/3 cups all-purpose flour
• 2 cups sugar
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 13.5 oz can coconut milk
• 1/2 cup butter (real, salted)
• 1/2 cup half & half or whole milk
• 2 eggs
• 3 teaspoons coconut extract
• 1/2 cup butter (real, salted) [for icing]
• 1/2 cup half & half or whole milk [for icing]
• Dash of salt [for icing]
• 1 teaspoon coconut extract [for icing]
• 1 1-lb box powdered sugar
• 3 cups sweetened flaked coconut

Directions

1. Grease a 10x15-inch baking pan and preheat your oven to 350°F.
2. In a large mixing bowl, whisk together the all-purpose flour, sugar, baking soda, and salt until completely uniform, then set aside.
3. Combine the canned coconut milk (both the solid fat and liquid portions) and 1/2 cup of salted butter in a small saucepan, heating over medium-high while stirring until it reaches a full boil, then immediately remove from the heat.
4. In a separate small bowl, whisk together 1/2 cup of half & half, the eggs, and 3 teaspoons of coconut extract until well blended.
5. Pour the hot coconut milk and butter mixture into the dry flour mixture, stirring gently to combine, then pour in the egg mixture and whisk vigorously for one full minute until smooth.
6. Pour the batter into your prepared baking pan and bake at 350°F for 25 minutes, or until a toothpick inserted into the center comes out clean.
7. Immediately upon removing the cake from the oven, evenly scatter the 3 cups of sweetened flaked coconut over the hot surface.
8. In a clean saucepan, combine the remaining 1/2 cup of salted butter, 1/2 cup of half & half, and a dash of salt, heating until the mixture just begins to simmer.
9. Sift the 1-pound box of powdered sugar into a bowl to eliminate lumps, then pour the hot butter mixture over it, add 1 teaspoon of coconut extract, and stir until completely smooth.
10. Slowly drizzle the warm icing in a wide, sweeping pattern over the coconut-topped cake, then let the cake rest for 30 minutes to allow the glaze to set before slicing.

Notes

Keep these essential tips in mind to ensure your sheet cake turns out beautifully moist and perfectly set every single time:

• Brand Recommendation & Salt Conversion: Use a high-quality canned coconut milk like Chaokoh or Thai Kitchen. Avoid "light" coconut milk, which has too much water and will ruin the cake's delicate fat-to-flour ratio. If using Diamond Crystal kosher salt, use 1 teaspoon; if using Morton's or table salt, cut it down to 1/2 teaspoon.
• Science-Backed Rationale: Do not skip boiling the coconut milk and butter. Heating them together melts the solid coconut fats and emulsifies them with the dairy butter, preventing the cake batter from separating or turning greasy during baking.
• Workflow Warning: Keep a close eye on the saucepan when boiling the coconut milk and butter. Coconut milk contains natural sugars that can scorch quickly on the bottom of the pan if left unstirred over high heat.
• Storage Note: This cake keeps exceptionally well at room temperature for up to 4 days if wrapped tightly in plastic wrap. The high sugar content in the glaze acts as a natural humectant, keeping the crumb moist.
• Alternative Pan Sizes: If you do not have a 10x15-inch sheet pan, you can use a standard 9x13-inch baking pan, but you will need to increase the baking time by 5 to 8 minutes since the cake will be thicker.

Serving Suggestions

This sweet, tropical cake pairs beautifully with elements that offer a sharp contrast in temperature, texture, or acidity:

• Serve alongside a scoop of tart mango sorbet to cut through the rich, milky sweetness of the coconut glaze.
• Pair with a cup of strong, dark roast coffee or espresso; the bitter notes of the coffee contrast beautifully with the sweet, toasted coconut flakes.
• Top with fresh, macerated raspberries or passionfruit pulp for a bright, acidic pop that balances the dense crumb.
• If you want to lean into a candy-bar profile, throw on some toasted almonds to mimic the flavors of Almond Joy Magic Cookie Bars.

Storage and Reheating

Storing this cake is incredibly low-maintenance, which is one of the reasons it is such a potluck champion. Once the cake has cooled completely to room temperature, cover the pan tightly with a double layer of plastic wrap or aluminum foil. It can sit happily on your kitchen counter for up to 4 days without losing its signature moisture.

If you prefer to keep it in the fridge, be warned that the butter and coconut fats will firm up, making the crumb taste slightly dense and dry when cold. To fix this, simply let individual slices sit on the counter for 20 minutes before serving, or pop a slice in the microwave for 8 to 10 seconds to loosen up the fat matrix.

For long-term storage, this cake freezes beautifully. Slice the cake into individual squares, wrap each piece tightly in plastic wrap, and store them in a heavy-duty freezer bag for up to 3 months. Thaw at room temperature for about an hour before eating.

Avoid reheating the entire cake in the oven, as this will melt the delicate powdered sugar glaze and turn the toasted coconut topping into a soggy, sweet mess. Stick to quick, low-power microwave bursts for individual portions.

Ingredient Substitutes

If you need to swap ingredients, these precise substitutions will keep your cake's texture and flavor profile intact:

1. Canned Coconut Milk: Substitute with heavy cream mixed with 1 teaspoon coconut extract (1:1 ratio). Tweak: Whisk the extract into the cream before heating to ensure the flavor compounds dissolve evenly in the fat.
2. Half & Half: Substitute with whole milk (1:1 ratio). Tweak: Add an extra tablespoon of melted butter to the batter to make up for the lost milkfat and maintain the cake's tender crumb.
3. Sweetened Flaked Coconut: Substitute with unsweetened shredded coconut (1:1 ratio). Tweak: Toast the unsweetened coconut in a dry skillet for 2 minutes before sprinkling it over the cake to enhance its natural oils and sweetness.
4. Salted Butter: Substitute with unsalted butter (1:1 ratio). Tweak: Add an extra 1/4 teaspoon of fine sea salt to both the flour mixture and the icing to balance the sweetness.

There is something deeply comforting about a cake that doesn't demand perfection or fussy decorating. It sits quietly on the counter, waiting for someone to sneak by with a fork and steal a little corner square.