Fluffy "Key Lime" Pie

1/4 cup boiling water 

1 package lime gelatin (jello)

 2 cartons key lime yogurt (6 oz each) 

1 8 ounces whipped topping

 1 9 inch graham cracker crust 

 Add boiling water to gelatin, stir for 2 minutes. 

 Whisk in yogurt right away and fold in whipped topping right after. Pour into graham cracker crust. Refrigerate for at least 2 hours. To make other flavors substitute the gelatin (jello) and yogurt. 

 Some ideas: 

 Strawberry jello and vanilla yogurt 

Orange jello and orange or vanilla yogurt 

Lemon jello and vanilla yogurt

raspberry jello and vanilla yogurt