Step 1: Preheat the Oven

Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper to prevent the cookies from sticking and to ensure even baking.

Step 2: Cream the Butter and Sugar

In a large mixing bowl, beat the softened butter and granulated sugar together until the mixture is light and fluffy. This step is crucial as it creates air pockets in the dough, leading to softer cookies. It is best to use an electric mixer, but a whisk can also work with some extra effort.

Step 3: Add Wet Ingredients

Mix in the vanilla extract, egg, lime juice, and lime zest. Stir until everything is well combined. The egg helps bind the ingredients together, while the lime juice and zest infuse the dough with bright, citrusy notes.

Step 4: Incorporate Dry Ingredients

Gradually add the flour, baking powder, salt, and baking soda. Mix until just combined. Be careful not to overmix, as this can make the cookies denser instead of light and tender. The dough should be soft but not too sticky.

Step 5: Shape the Cookies

Roll the dough into 1-inch balls and place them on the prepared baking sheet, leaving about 2 inches of space between each cookie. This allows them to spread evenly while baking.

Step 6: Bake to Perfection

Bake the cookies for 9-10 minutes or until the edges begin to turn a light golden brown. Avoid overbaking, as this can cause the cookies to become too crispy. Once done, remove the cookies from the oven and let them sit on the baking sheet for about 5 minutes before transferring them to a cooling rack. This extra time helps them set properly.

Step 7: Prepare the Glaze

While the cookies cool, whisk together the powdered sugar, lime juice, lime zest, and vanilla extract in a small bowl. If the glaze is too thick, add a little extra lime juice. If it is too thin, add more powdered sugar until the desired consistency is achieved.

Step 8: Glaze and Garnish

Once the cookies are completely cool, spoon about 1 teaspoon of glaze onto the center of each cookie and spread it evenly. Alternatively, drizzle the glaze over the cookies for a lighter coating. Sprinkle extra lime zest on top for added color and flavor.