01 -
In a mixing bowl, cream softened butter and granulated sugar using a mixer for 2-3 minutes until light and fluffy.
02 -
Add baking soda, cream of tartar, and salt to the mixture and mix until combined.
03 -
Beat in the egg, vanilla extract, lime zest, and lime juice until fully incorporated.
04 -
Gradually add all-purpose flour and optional food coloring, mixing until the dough forms. Chill the dough in the refrigerator for 2 hours.
05 -
Preheat oven to 375°F. Scoop the dough into 1-tbsp-sized balls and roll them in granulated sugar to coat.
06 -
Place the dough balls on a baking sheet lined with parchment paper, leaving space between each cookie. Bake for 8-10 minutes or until the edges are slightly golden.
07 -
For the glaze, mix melted butter, lime juice, and powdered sugar in a small bowl until smooth. Drizzle or spread the glaze on the cookies while they’re still warm.
08 -
Let the cookies cool completely before serving.