Coconut Lime Cake

4.41 from 20 votes

This Lime & Coconut Cake evokes the very best of those tropical island flavors. Tender coconut lime cake layers with a tangy lime curd and silky coconut buttercream.

Course Dessert

Cuisine American

Prep Time 2

Cook Time 35

Chilling Time 3

Total Time 5 35

Servings

Calories 894kcal

Author Olivia

Ingredients

Coconut Lime Cake:

3 cups all-purpose flour
1 Tbsp baking powder
3/4 tsp salt
1 cup unsalted butter room temperature
1 Tbsp lime zest from about 1 1/2 limes
2 cups granulated sugar
4 large eggs room temperature
2 tsp vanilla extract
1 1/2 cup coconut milk room temperature
3/4 cup sweetened shredded coconut medium or large

Lime Curd:

3 large eggs
3/4 cup granulated sugar
1/4 cup lime juice fresh squeezed, from 2 1/2 limes
2 tsp lime zest from one lime
1/4 cup unsalted butter room temperature, cubed

Coconut Swiss Meringue Buttercream:

6 large egg whites
2 cups granulated sugar
3 cups unsalted butter room temperature
2 tsp vanilla extract
6-8 Tbsp coconut milk powder to taste

Assembly:

simple syrup optional

US Customary - Metric

Instructions

Coconut Lime Cake:

Preheat oven to 325F. Grease and flour three 8" cake rounds and line with parchment.
In a medium bowl, whisk flour, baking powder, and salt until well combined. Set aside.
Using a stand mixer fitted with a paddle attachment, cream butter and lime zest until smooth. Add sugar and beat on med-high until pale and fluffy (approx 3mins).
Reduce speed and add eggs one at a time fully incorporating after each addition. Add vanilla.
Alternate adding flour mixture with milk, beginning and ending with flour (3 additions of flour and 2 of milk). Fully incorporating after each addition. Gently fold in shredded coconut.
Spread batter evenly between the prepared pans and smooth the tops.
Bake for about 35mins or until a toothpick inserted into the center comes out mostly clean.
Place cakes on wire rack to cool for 10mins then turn out onto wire rack to cool completely.

Lime Curd:

Place eggs and sugar into a small pot, whisk to combine. Add lime juice and zest. Cook over medium-low heat whisking constantly until mixture thickens and coats the back of a spoon. Stir in cubed butter and whisk until smooth.
Transfer to a glass bowl and lay plastic wrap directly on surface to prevent a skin from forming. Chill for 2 hours to set. Makes a little over 1 cup.

Coconut Swiss Meringue Buttercream:

Place egg whites and sugar into the bowl of a stand mixer, whisk until combined.*
Place bowl over a pot with 1-2" of simmering water and whisk constantly until the mixture is hot and no longer grainy to the touch or reads 160F on a candy thermometer (approx. 3mins)
Place bowl on your stand mixer and whisk on med-high until the meringue is stiff and cooled (the bowl is no longer warm to the touch (approx. 5-10mins)).
Switch to paddle attachment. Slowly add cubed butter and mix until smooth.**
Add vanilla and 6-8 Tbsp coconut milk powder (to taste) one Tbsp at a time whip until smooth.

Assembly:

Place one layer of cake on a cake stand or serving plate. Poke holes into the cake using a bamboo skewer. Brush with simple syrup if desired.
Spread a thin layer of buttercream on top of the layer and pipe a border around the outside to hold the lime curd in. Fill with about 1/2 cup of lime curd. Repeat with next layer.
Place final layer on top and do a thin crumb coat on the cake. Chill for 20mins.
Frost the top and sides of the cake with remaining frosting. Smooth the sides and top and do a rope border with the remaining buttercream. Fill the center with large toasted coconut chips and sprinkle with lime zest if desired.

Notes

* Ensure there is NO trace of egg yolks in your whites and that your mixer bowl and whisk is completely grease free or your meringue won't stiffen.
** The buttercream may look like it's curdled at some point. Keep mixing until it is completely smooth.

Nutrition

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