Key Lime Cake

- 1 package (18.25 oz) lemon cake mix 
- 1 1/3 cups vegetable oil 
- 4 eggs 
- 1 package (3 oz) lime Jell-O 
- 3/4 cup orange juice 
green food coloring (optional) 

FROSTING: 

- 1/2 cup butter or margarine (1 stick), softened 
- 1 package cream cheese (8 oz), softened 
- 3 tablespoons lime juice 
- 4 cups powdered sugar 
green food coloring (optional) 

Container: 9x13 cake pan, 2 medium mixing bowls, hand mixer 

Prep Time: 15 minutes 
Cook Time: 30 minutes 

Combine all ingredients  in mixing bowl. Add 3 drops green food coloring if you want a more intense green color. 
Bake according to directions on box (25-35 min.). Cool. 
Frost with frosting and refrigerate. 

FROSTING: 
Beat butter and cream cheese together. Add juice and powdered sugar. Blend with mixer until smooth.