My mom taught me how to make this refreshingly tart treat. Can't beat a recipe with 4 ingredients.

This southern 4-ingredient lemon icebox pie is the kind of recipe that gets passed down on stained recipe cards, not fancy cookbooks. My mama taught me to make it when I was just tall enough to see over the counter, and I still pull it out whenever the weather turns warm or company drops by. It’s refreshingly tart, cool, and creamy, with that simple, old-fashioned charm you only get from a handful of pantry staples. Around here, pies like this showed up at church suppers, family reunions, and after long days in the garden, because you could stir it together in minutes and let the icebox do the rest. You really can’t beat a recipe with just four ingredients and a whole lot of memories baked in.

Serve this lemon icebox pie well chilled, straight from the refrigerator, with clean slices cut right from the glass pie dish. It’s lovely on its own, but a few fresh berries on the side or a sprig of mint on each slice dresses it up for company. A cup of hot coffee or iced tea balances the tartness nicely, and it makes a cool, light finish after grilled chicken, barbecue, or any hearty Sunday dinner. If you’re feeding a crowd, set the whole pie on the table with a simple supper of cold ham, potato salad, and sliced tomatoes, and let everyone help themselves.

Servings: 8

1 (9-inch) prepared graham cracker pie crust

Set the prepared graham cracker crust in a glass pie dish (if it’s not already in one) and place it on a small baking sheet or tray so it’s easy to move in and out of the refrigerator.

In a medium mixing bowl, whisk together the sweetened condensed milk and freshly squeezed lemon juice until the mixture is smooth, thick, and evenly combined. The lemon juice will start to thicken the milk as you stir.

In a separate chilled bowl, beat the cold heavy whipping cream with a hand mixer or sturdy whisk until soft peaks form. The cream should be thick and hold its shape, but still look smooth and billowy, not stiff or grainy.

Gently fold the whipped cream into the lemon-condensed milk mixture in two or three additions, using a spatula to lift and turn the mixture rather than stir hard. Fold just until no streaks remain and the filling is light and creamy.

Pour the lemon filling into the graham cracker crust, smoothing the top with the back of a spoon or an offset spatula so it’s level and reaches the edges of the crust.

Carefully transfer the pie (still on the tray) to the refrigerator. Chill for at least 4 hours, or until the filling is fully set and slices hold their shape when cut. For the firmest texture and cleanest slices, chill overnight.

When ready to serve, slice the pie directly in the glass dish with a sharp knife, wiping the knife between cuts for neat pieces. Serve cold, and return any leftovers to the refrigerator promptly.

For a slightly sweeter, less tart pie, reduce the lemon juice to 2/3 cup; for a bracing, old-time pucker, use a full 3/4 cup and pack your lemons full of juice. If you prefer a more traditional baked crust, you can pop the graham cracker crust into a 350°F oven for 6–8 minutes to toast lightly, then cool completely before filling; it adds a little crunch and a toasty flavor. A simple garnish of thin lemon slices or a light sprinkle of grated lemon zest on top before chilling makes the pie look extra special without adding more ingredients. If you’re making this ahead for a picnic or church supper, freeze the pie for 1–2 hours before traveling so it stays cold longer; just let it soften in the refrigerator before serving. You can also divide the filling among small glass dishes or jars for individual icebox desserts using the same four ingredients, pressing a little crust into the bottom of each and spooning the lemon filling over the top. However you serve it, keep the pie well chilled, as the creamy filling is at its best straight from the icebox.