Description

Who said that the only way to enjoy Key Limes were in a Key Lime pie? These cupcakes are a delicious way to enjoy those special limes. You will get rave reviews!

Ingredients

• lime curd:
• 1/2 c. granulated sugar
• 1 large egg + 1 egg yolk
• 1/4 c. fresh Key lime juice (from about 8 Key limes)
• 2 t. cornstarch
• 4 T. unsalted butter, cut into pieces
• 1 t. grated Key lime zest (from about 2 Key limes)
• pinch of salt
• cupcakes:
• 12 chocolate wafer cookies
• 12 tablespoons unsalted butter, at room temperature
• 1 1/4 c. all-purpose flour
• 1/2 t. baking powder
• 1/4 t. baking soda
• 1/4 t. salt
• 3/4 c. granulated sugar
• 2 large eggs, at room temperature
• 1 t. vanilla extract
• 1 t. grated Key lime zest
• 2 T. fresh Key lime juice (from about 4 Key limes)
• 1/3 c. buttermilk
• frosting:
• 1 stick unsalted butter, at room temperature
• 3 1/4 c. confectioners' sugar
• 1/4 c. sour cream
• 1 T. fresh Key lime juice
• pinch of salt
• Key lime slices and grated zest, for topping

Steps

1. Lime curd:
2. Combine the granulated sugar, egg and egg yolk, lime juice and cornstarch in a small saucepan. Cook over medium-low heat, whisking, until thick enough to coat a spoon, 8 - 10 minutes. Remove from heat; whisk in the butter, a little at a time, until smooth. Strain through a fine-mesh sieve into a bowl; stir in the lime zest and salt. Set bowl in a larger bowl of ice; stir until curd is completely cool. Press plastic wrap directly onto the surface; refrigerate until ready to use.
3. Cupcakes: