Ingredients

• 0.33 cups white sugar
• 2 tablespoons lime juice
• 1 tablespoon grated lime zest
• 1 egg
• 1 drop green food coloring , or as desired
• 0.33 cups butter , softened
• 0.25 cups white sugar
• 1 egg
• 1 teaspoon vanilla extract
• 1.5 cups all-purpose flour
• 0.25 teaspoons salt
• 1 tablespoon confectioners' sugar for dusting

Instructions

1. 1 Place 1/3 cup of sugar, the lime juice, lime zest, and 1 egg in a saucepan over low heat, and whisk constantly until the mixture almost reaches a simmer and begins to thicken. Remove the mixture from the heat, and tint to your desired shade of green with food coloring. Set the filling aside to cool.
2. 2 Preheat oven to 325 degrees F (165 degrees C).
3. 3 In a bowl, cream the butter with 1/4 cup of sugar, then stir in 1 egg and vanilla extract. Mix in the flour and salt until the dough is smooth. Roll dough into 1-inch balls. Arrange on an ungreased baking sheet, placing the balls about 2 inches apart. Use your thumb to make an indentation in the center of each dough ball. Spoon about 3/4 teaspoon of the lime filling into each.
4. 4 Bake in the preheated oven until the cookies are set but not browned, 12 to 15 minutes. Allow cookies to cool on baking sheet for 1 minute before removing to finish cooling on wire racks. When cookies are cool, sprinkle lightly with confectioners' sugar.

Nutrition per serving