Coconut Key Lime Pie Cupcakes

I got tired of waiting for warm weather to debut these cupcakes…if it’s not going to feel like spring, it can at least taste like spring!  While I tend to gravitate towards chocolate desserts, it’s hard to say no to a delicious piece of key lime pie…especially when that piece of key lime pie comes in the form of a cute cupcake.

I came up with the idea for these cupcakes from my Lemon Raspberry Cupcakes that I made last year.  However, I decided to change the cupcake base and adapt one of my favorite cupcake recipes: Coconut cupcakes from The Barefoot Contessa.  (If you haven’t made these cupcakes before, you should add them to your todo list now-they’re that good!  …And then you should make these key lime pie cupcakes!)  My version here omits the almond extract (while delicious, I felt it would add conflicting flavors) and decreases the amount of coconut used.  The end result is a moist, white cupcake with a hint of coconut- the perfect canvas for the remaining cupcake components.

The cupcakes are then filled with a tart lime curd (adapted from Joanne Chang’s Lemon Curd recipe).  The remaining lime curd is used to make a fluffy lime frosting before getting topped with a graham cracker crust crumb.

Now a word on using key limes versus regular limes… While my local whole foods did have actual key limes, they are more expensive than regular limes and they are much smaller which increases the work of juicing them substantially.  Since I was feeling lazy (relatively speaking, I mean I did make these cupcakes entirely from scratch) I decided to use regular limes to save myself some time and muscle strength.  Key limes are supposed to be slightly more tart and bitter than regular limes so if anything, I just ended up with a sweeter cupcake!

Coconut Cupcakes (modified from Barefoot Contessa)20140317-163515.jpg

Makes 18-20 cupcakes

3/4 pound (3 sticks) unsalted butter, room temperature
2 cups sugar
6 large eggs at room temperature
1 1/2 teaspoons pure vanilla extract
3 cups flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon kosher salt
1 cup buttermilk
4 ounces sweetened, shredded coconut

Preheat the oven to 325 degrees F.

In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and sugar on high speed until light and fluffy, about 5 minutes. With the mixer on low speed, add the eggs, 1 at a time, scraping down the bowl after each addition. Add the vanilla extract and mix well.

In a separate bowl, sift together the flour, baking powder, baking soda, and salt. In 3 parts, alternately add the dry ingredients and the buttermilk to the batter, beginning and ending with the dry. Mix until just combined. Fold in 4 ounces of coconut.

Line a muffin pan with paper liners. Fill each liner to the top with batter. Bake for 25 to 35 minutes, until the tops are brown and a toothpick comes out clean. Allow to cool in the pan for 15 minutes. Remove to a baking rack and cool completely

Lime Curd (Modified from Joanne Chang’s Lemon Curd)

1/2 cup fresh lime juice
1-1/2 oz. (3 Tbs.) unsalted butter
3 large eggs
1 large egg yolk
1/2 cup granulated sugar
1/4 tsp. pure vanilla extract
1/8 tsp. kosher salt

In a 3-quart nonreactive saucepan, heat the lime juice and butter over medium-high heat until just under a boil. In a medium heatproof bowl, whisk the eggs and egg yolk and then slowly whisk in the sugar until combined. Gradually whisk the hot lime juice mixture into the sugar and eggs.

Return the mixture to the saucepan and set over medium heat. Cook, stirring constantly with a wooden spoon and scraping the bottom of the pan frequently, until the curd thickens and coats the spoon, 2 to 4 minutes. Draw your finger along the back of the spoon; when the curd is done, it should hold the trail.

Remove the curd from the heat and strain it through a fine sieve into a bowl. Whisk in the vanilla and salt. Cover with plastic wrap, pressing the plastic onto the surface of the curd, and chill for 1 to 2 hours before using. Can be made 5 days ahead of time, keep refrigerated.

Lime Frosting

1/2 cup lime curd (above)
1 cup (2 sticks) of butter at room temperature
4 1/2 cups of powdered sugar, divided
2 tsp lime zest
1/2 cup heavy cream

In a standmixer with a whip attachment, whip the butter and 2 cups of powdered sugar until combined. Add the lime curd and mix to combine. Gradually add the remaining 2 1/2 cups of powdered sugar, scraping the bottom and sides of the bowl as needed to thoroughly incorporate all ingredients. Add the cream and whip for 1-2 minutes until light and fluffy.

Graham Cracker Crust

7 whole graham crackers, coarsely broken
1/4 cup (1/2 stick) unsalted butter, melted
2 tablespoons sugar

Preheat oven to 350°F. Line baking sheet with foil.  Blend graham crackers, melted butter, and 2 tablespoons sugar in processor until moist clumps form. Press crumb mixture over prepared baking sheet.   Bake crust until lightly browned, about 15 minutes.  Let cool.   Crumble again into crumbs to use for topping cupcakes.

Assembly

Reserve 1/2 cup of lime curd for the frosting (above).  Pipe or inject the remaining lime curd into the center of the cupcakes.  I did this by using a pastry bag fitted with a small round tip (you can also use a syringe or if all else fails, cut a small cone out of the center of the cupcake and spoon in the lime curd).  Next, frost the tops of the cupcakes with the lime frosting- it doesn’t really matter if it looks pretty (unless you’re a perfectionist!) since you’ll be dipping the tops in the graham cracker crust crumbs next!

“Well, let’s give that key lime pie a day in court, and a big old glass of non-fat milk, if you please” ~Natural Born Killers

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