- In a small bowl, combine sour cream, sugar, lime juice, tequila, and Grand Marnier. Stir to combine.
- Spoon mixture on top of cheesecakes.
- Return to oven for 3 minutes.
- Remove from oven. Let cool to room temperature. Keep refrigerated.
- While the cheesecakes are baking, make the sour cream topping.
- You can omit the sour cream topping but it really adds a nice layer of flavor.