How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Foolproof Key Lime Pie?

You need 13 ingredients. The key ingredients include: 12 graham cracker sheets, finely ground (1 1/2 cups graham cracker crumbs), 1/4 cup packed brown sugar, 1/4 teaspoon salt, divided, 6 tablespoons unsalted butter, melted, and more.

Is Foolproof Key Lime Pie suitable as baking & desserts?

Yes, Foolproof Key Lime Pie falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover Foolproof Key Lime Pie?

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

Foolproof Key Lime Pie Recipe

Name: Foolproof Key Lime Pie
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 12 graham cracker sheets, finely ground (1 1/2 cups graham cracker crumbs); 1/4 cup packed brown sugar; 1/4 teaspoon salt, divided; 6 tablespoons unsalted butter, melted; 1 cup heavy cream, divided; 3 teaspoons Key lime zest, divided; 1/2 cup fresh Key lime juice; 1 (14-ounce) can sweetened condensed milk; 2 large egg yolks; 1 large egg; 1 tablespoon powdered sugar; 1/2 teaspoon vanilla extract; Garnish: Key lime slices

Bake this irresistible Foolproof Key Lime Pie at home. Made with graham cracker sheets, brown sugar, salt and unsalted butter. Easy step-by-step instruc…

This Foolproof Key Lime Pie relies on simple, everyday ingredients such as packed brown sugar, salt, divided, unsalted butter, melted and heavy cream, divided. It comes together quickly and makes 4 servings, at about 1046 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Foolproof Key Lime Pie delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.

Updated Jun 30, 2026

Serves 4 Baking & Desserts

1046

kcal

Calories

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

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Foolproof Key Lime Pie

Tips for the best results

Variations & substitutions

My Personal Notes

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