I'll probably be trying this recipe for Christmas, Tim. I think it's the one you're asking for.

DREAMSICLE COOKIES
1 3/4 c. flour
1/2 tsp. baking soda
1/2 tsp. baking powder
3/4 c. sugar
1/2 c. orange flavored drink mix (like Tang)
1/2 c. softened butter
1 egg
1 tsp. vanilla extract
1 1/2 c. vanilla chips

Combine flour, soda, and baking powder; set aside. Beat together butter, sugar, drink mix, egg, and vanilla. Stir in flour mixture and chips. Roll heaping tablespoonsful of the dough into balls and place 2" apart on lightly greased baking sheet. Bake at 375° for 12 to 14 minutes till tops are lightly browned. Cool for 5 minutes on the sheet; then remove to racks to finish cooling. Makes 30