Some good recipes.
Source: Adapted from this joint at Grouprecipes.com.
Servings: Makes around 36 itty-bitty cookies.
Prep Time: 15 minutesCook Time: 15 minutes
Instructions: Preheat oven to 350F
Add drink mix powder to the white chocolate and melt in a double boiler. Whisk to integrate. Spread the mess out over a Silpat or parchment-lined sheet pan until 1/8 inch thick and pop in the freezer 15 minutes to harden. Peel from 'pat and run a knife thru the white chocolate to dice into pieces about the same size as minced onion.
With hand or stand mixer on medium, beat butter and 1/4 cup powdered sugar, for 2 minutes, scraping bowl as necessary. Add vanilla and salt and mix 30 seconds more to integrate. Slow things down to a stir, add flour, zest & lemon juice. When it comes together, stir in the chopped white chocolate.
Roll cookies into 3/4 inch balls (about a measured tsp of dough) and space evenly on a Silpat or parchment-lined sheet pan. Bake for 12-14 minutes, or until the bottom edges just begin to brown. When done, let rest 5-7 minutes on the pan before removing to wire rack to cool completely.
When completely cool, coat the cookies in the remaining 1/2 cup of powdered sugar. The cookies are delicate, so use finesse while tossing your cookies. And keep your hair back. :-p