Mango Key Lime Margaritas

2 tequila
1 Cointreau
1/4 fresh mango, peeled and chopped
1/2 cup fresh orange juice
Juice of 1/2 Key or Mexican lime
1 cup crushed ice
2 slices Key or Mexican lime (garnish)

Combine tequila, Cointreau, mango, orange juice, lime juice and ice in a blender and blend until slushy. Serve in large martini glasses. Garnish with lime slices.