Lemon Marshmallow Icebox Pie Cups

Introducing the perfect make-ahead dessert for lemon lovers: our individual Lemon Marshmallow Icebox Pie Cups. Combining a crisp, buttery cracker crust, a bright and tangy lemon filling, soft pillows of miniature marshmallows, and a cloud of whipped cream, these layered treats are as beautiful as they are delicious.

This no-bake recipe simplifies the classic icebox pie into convenient, single-serving portions, making them ideal for parties, picnics, or a simple weeknight indulgence. The bright, sunny flavor of the lemon curd is balanced perfectly by the sweetness of the marshmallows and the rich, airy whipped cream. Best of all, they require no oven time, making them a refreshing choice for warm weather.

Ingredients

For the Graham Cracker Crust:

1 ½ cups (150g) finely crushed graham crackers (about 10–12 full sheets)
2 tablespoons (25g) granulated sugar
6 tablespoons (85g) unsalted butter, melted

For the Lemon Filling:

1 cup (200g) granulated sugar
3 tablespoons (24g) cornstarch
A pinch of salt
1 cup (240ml) water
3 large egg yolks, lightly beaten
1 tablespoon (14g) unsalted butter
½ cup (120ml) fresh lemon juice (from 2–3 lemons)
1 teaspoon finely grated lemon zest

For the Assembly:

2 cups (approx. 100g) miniature marshmallows, divided
1 ½ cups (360ml) heavy whipping cream, chilled
3 tablespoons (23g) powdered sugar
1 teaspoon vanilla extract
Optional garnish: additional fresh lemon zest

Instructions

1. Prepare the Crust

In a medium bowl, combine the crushed graham crackers and granulated sugar. Pour in the melted butter and mix with a fork until all the crumbs are evenly moistened and resemble wet sand.
Divide the crumb mixture evenly among 6–8 small clear serving glasses or jars (about 6–8 oz capacity each).
Use the back of a small spoon or a tamper to firmly press the crumbs into the bottom of each glass to form an even crust. Place the glasses in the refrigerator to chill while you prepare the filling.

2. Cook the Lemon Filling

In a medium saucepan, whisk together the granulated sugar, cornstarch, and salt. Gradually whisk in the water until smooth.
Place the saucepan over medium heat and bring the mixture to a gentle simmer, whisking constantly. Continue to cook for 2–3 minutes, or until the mixture begins to thicken and turn translucent.
Remove the saucepan from the heat. Slowly whisk about half of the hot mixture into the beaten egg yolks to temper them. Then, pour the egg yolk mixture back into the saucepan with the remaining hot filling, whisking constantly.
Return the saucepan to medium-low heat and cook, stirring constantly, for another 2–3 minutes, or until the filling is very thick and bubbles break the surface. (Be careful not to boil vigorously, or the eggs may scramble.)
Remove from heat and immediately stir in the butter until melted. Whisk in the fresh lemon juice and lemon zest until well combined.

3. Assemble the Pie Cups

Let the lemon filling cool for about 10 minutes, stirring occasionally, so it is still warm but not scalding.
Remove the chilled crusts from the refrigerator. Evenly distribute about 1 cup of the miniature marshmallows among the crusts (reserving 1 cup for the top layer).
Ladle or spoon the warm lemon filling evenly over the marshmallows in each cup, filling them to about three-quarters full.
Immediately top each cup with the remaining miniature marshmallows while the filling is still warm, gently pressing them so they adhere to the surface.
Let the cups cool at room temperature for 30 minutes, then cover with plastic wrap and refrigerate for at least 4 hours, or until the lemon filling is completely set and chilled.

4. Make the Whipped Cream and Serve

Just before serving, in a chilled large bowl, use an electric mixer to beat the cold heavy whipping cream, powdered sugar, and vanilla extract on medium-high speed until stiff peaks form.
Spoon or pipe a generous amount of the whipped cream over the chilled marshmallows in each cup.
If desired, garnish with a light dusting of fresh lemon zest. Serve immediately.

Tips for Success

Perfect Lemon Flavor: Always use fresh-squeezed lemon juice. Bottled juice does not offer the same bright, vibrant flavor.
Zesting: When zesting the lemon, ensure you only grate the bright yellow outer layer, avoiding the bitter white pith underneath.
Preventing a Soggy Crust: Chilling the crust before adding the filling helps keep it firm. The warm (not hot) lemon filling also helps create a barrier that prevents the marshmallows from dissolving into the crust.
Smooth Filling: If you are concerned about lumps in your lemon filling, you can strain it through a fine-mesh sieve immediately after stirring in the butter and lemon juice.
Customization: You can easily adapt this recipe. Use vanilla wafers or ginger cookies instead of graham crackers for the crust, or try layering in fresh raspberries or blueberries with the marshmallows.

Storage and Reheating

Storage: These Lemon Marshmallow Icebox Pie Cups can be covered and stored in the refrigerator for up to 3 days. For the best texture, it is recommended to add the whipped cream topping just before serving, although they can be stored fully assembled if necessary.
Make Ahead: The components can be prepared ahead of time. The crusts can be pressed into the glasses and refrigerated for 2 days, and the lemon filling can be stored in an airtight container in the refrigerator for up to 3 days. Gently re-warm the filling slightly (just enough to make it pourable, not hot) before assembling.

Serving Suggestions

These individual cups are a complete dessert on their own, but you can enhance the experience by serving them alongside:

A crisp sugar cookie or shortbread.
A hot cup of Earl Grey tea or fresh coffee.
A sprinkle of toasted coconut flakes.

Conclusion

These Lemon Marshmallow Icebox Pie Cups are the ultimate solution for a refreshing, crowd-pleasing dessert that requires zero baking. The combination of the crunchy crust, tart lemon filling, gooey marshmallows, and sweet whipped cream is a guaranteed hit. Perfect for entertaining or simply treating your family, this recipe offers a delightful twist on a classic flavor profile that is sure to become a favorite. Enjoy!