1-First Step: Make the crumb mixture Start by combining the 1 1/2 cups graham cracker crumbs with the 4 ounces melted unsalted butter. Stir until every crumb looks evenly coated and the mixture feels like damp sand. This step matters because the butter helps the crust hold together once the pies freeze. If you are using 1 sleeve of graham crackers instead of store-bought crumbs, crush them finely in a food processor or a zip-top bag with a rolling pin.

2-Second Step: Beat the cream cheese until smooth Using an electric mixer, beat the 8 ounces softened cream cheese until it is creamy and free of lumps. Soft cream cheese blends much better, so do not skip the softening step. If you are trying a lighter version, this is the stage where a reduced-fat cream cheese can work too. Mix slowly at first so the cream cheese does not fly out of the bowl.

3-Third Step: Add the sweetened condensed milk Pour in the 14-ounce can sweetened condensed milk and mix until the filling looks glossy and smooth. The mixture should become thicker and silkier. This ingredient sweetens the filling and gives the pies their classic no-bake texture. If you are making a dairy-free version, use a plant-based condensed milk alternative here.

4-Fourth Step: Add the key lime juice Now add the 3/4 cup key lime juice and blend until the filling looks even and creamy. Fresh squeezed juice from about a pound of key limes gives a bright, bold flavor, but bottled key lime juice works very well too. If you need a backup, regular lime juice is a solid substitute. For a slightly stronger lime flavor, you can also add a little lime zest.

5-Fifth Step: Fold in the whipped topping Gently fold in the 8 ounces whipped topping until no streaks remain. Use a spatula and light motions so the filling stays airy. This is what gives these Heavenly No-Bake Mini Key Lime Pies their soft, mousse-like feel. If you prefer homemade whipped cream, fold it in the same way, though the filling may be a little softer after freezing.

6-Sixth Step: Fill the silicone cups Spoon the mixture into individual silicone cups and fill each one about 3/4 full. Silicone cupcake liners work beautifully because the pies release easily after freezing. Regular tins or paper liners also work if that is what you have. If you are making a party batch, line the cups on a sheet tray first so they are easier to move into the freezer.

7-Seventh Step: Add the crumb topping Sprinkle a little of the graham cracker mixture on top of each filled cup. This adds texture and gives the pies a nice finished look. You can press it gently into the surface if you want a firmer topping, but a light sprinkle is usually enough. If you enjoy extra crunch, save a few crumbs for garnish later too.

8-Eighth Step: Freeze until firm Place the tray in the freezer and let the pies freeze for 4 hours or until firm. Freezing is what sets these No-Bake Key Lime Pies, so patience matters here. If your freezer runs a little warm, give them a bit more time. For meal prep, these also freeze well for 3 to 4 months.

9-Ninth Step: Unmold with care To remove the pies, briefly submerge the bottom half of each mold in warm water. Do this for just a few seconds, then gently pop each pie out. Silicone molds usually release very easily, while paper liners may need a soft twist. If you are using paper or foil cups, peel them back slowly once the pies are chilled through.

10-Final Step: Serve and garnish Serve the pies graham cracker side down and top them with extra whipped topping. Key lime slices make a pretty garnish if you want a bakery-style finish. These little desserts are lovely for summer parties, holiday trays, or any time you want something cool and cheerful. They taste best served chilled straight from the freezer or after a short rest in the fridge.