Key Lime Dessert Cups

These dessert cups taste like a key lime pie filling that decided to skip the crust and live its best life in a sundae glass. Five ingredients, zero baking, ready to chill in under ten minutes of stirring. The kind of dessert that saves a summer dinner party when you forgot to make anything.

The magic combination here is sweetened condensed milk and lime juice. The acid in the lime juice reacts with the dairy proteins in the condensed milk and naturally thickens the mixture, the same way it does in a no-bake key lime pie. Add the whipped topping for lightness and the cream cheese for body, and you’ve got something that sets up to soft-mousse consistency in the fridge.

Fresh lime juice is worth squeezing if you have the limes, but bottled key lime juice or frozen limeade concentrate work in a pinch and give a more uniform tang.

Kitchen Tips

• Soften the cream cheese fully before mixing. Cold lumps won’t blend smooth no matter how long you whisk.
• Fold the whipped topping in last. Beating it in or stirring vigorously deflates the airy texture.
• A drop or two of green food coloring is purely for show. Real key lime pie is yellow-tan, not green; tint or skip based on preference.
• Chill at least 2 hours before serving for the best texture. The mousse firms up considerably as it sits.

Variations

• Sprinkle crushed graham crackers on the bottom of each glass before filling for a deconstructed key lime pie effect.
• Top each cup with whipped cream and a thin lime slice for a dinner-party finish.
• Swap lime for lemon juice and concentrate for a lemon icebox-style chilled dessert.