Libby with Lemony Thyme
zest of 1 lime
Combine Margarita Mix, Tequila, and Grand Marnier then pour into a shallow metal baking dish. Cover with plastic wrap and place in the freezer for an hour.
Stir mixture, then freeze an additional 6 hours or overnight.
Scrap mixture with a fork creating the shaved ice. Store in freezer until ready to serve.
Serve in individual glasses rimmed with salt. Sprinkle with lime zest.
Simply add a 1/2 cup of pureed fruit, such as strawberries or peaches to create a fruity Margarita Granita.