Beat Blue Cookie Mix, 2 tablespoons butter, and 2 tablespoons water in a medium mixing bowl with a hand mixer until dough forms. Repeat with Purple Cookie Mix and remaining 2 tablespoons of butter and water.
3. Step
Freeze both doughs for 20 minutes.
4. Step
Roll each batch of chilled dough into a 12-inch log; place, side by side, on a floured work surface, then tightly twist logs together. Roll to form rope.
5. Step
Break off 6 rectangles of the white chocolate bar, then break each small rectangle in half. Reserve the remaining white chocolate bar for later use.
6. Step
Form dough into 12 balls, using about 1 tablespoon of dough for each ball; flatten each ball into 2-inch round. Place 1 square of white chocolate on the center of each round. Mold dough around the chocolate to completely enclose chocolate; place on a parchment-covered baking sheet.
7. Step
Bake 12–13 minutes or until puffed in the centers and set around the edges. Cool for 5 minutes before transferring cookies to a cooling rack.
8. Step
Microwave reserved white chocolate bar in microwaveable bowl on high for 1 minute or until completely melted, stirring after 30 seconds. Drizzle the chocolate over warm cookies; top with pink sprinkles.
