INGREDIENTS
CAKE:
9 oz
Margarita Mixer, bottled liquid
3 oz
tequila
3/4 oz
Grand Marnier
1
box white cake mix
3
large egg whites
2 tbsp
canola oil
1 tbsp
lime zest
LIME BUTTERCREAM ICING:
1 cup
unsalted butter, at room temperature
5
to 6 cups powdered sugar
2 tbsp
lime juice, freshly squeezed
1/8 tsp
salt
1 tsp
lime zest
green food coloring, if desired
small lime slices for garnish, if desired