A simple recipe from Blenderking.com: (Per serving)
I. CHOCOLATE MARGARITA
1 1/2 ounces Tequila
1 ounce Godiva liquor
3/4 ounce cream or half & half
1 Tbsp Hershey’s syrup
2 ounces orange juice
Use shaker, not blender: Throw ingredients into shaker for a few quick shakes and pour into margarita glass with crushed oreos lining rim!
And, from Marcela Valladolid at Foodnetwork.com: This recipe is for a crowd
II. CHOCOLATE MARGARITA
To rim the glasses:
Finely chopped Mexican or bittersweet chocolate
1/2 cup chocolate syrup
1 cup (8 ounces) tequila
1/2 cup (4 ounces) chocolate liqueur (recommended: Godiva)
1/3 cup heavy cream
1/3 cup orange liqueur
1 tsp almond extract
1 tsp ground cinnamon
To rim glasses: Put syrup and chopped chocolate into 2 small dishes. Moisten rims of 4 margarita or martini glasses with chocolate syrup. Dip in Mexican chocolate until coated. Set aside.
Margarita: Combine all of ingredients, except ice, in pitcher. Working in batches, transfer mixture to shaker full of ice. Shake and pour into prepared glasses. Serve cold.