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No-Bake Key Lime Jello Pie with Cool Whip Topping

This No-Bake Key Lime Jello Pie combines lime gelatin, key lime juice, Cool Whip, and a graham cracker crust for a bright, creamy summer dessert. The filling whips up in minutes and chills to a light, fluffy set—an ideal no-bake option when the weather is warm and you don’t want to heat the kitchen.

Slice of key lime Jello pie with a graham cracker crust on a dessert plate. The pie is topped with whipped cream, a lime slice, and lime zest, with the remaining pie blurred in the background.

This simple no-bake pie takes about 15 minutes to prepare, with additional chill time in the refrigerator. It’s perfect for cookouts, holidays, potlucks, and any time you want a homemade dessert without using the oven.

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Shortcut Notes

  • No oven needed: Totally no-bake, which keeps your kitchen cool on hot days.
  • Few ingredients: Uses a small number of pantry staples for a quick and consistent result.
  • Make ahead: Prepare a day in advance and refrigerate until serving.

Ingredient Breakdown

Ingredients for key lime Jello pie arranged on a countertop. A prepared graham cracker crust sits alongside whipped topping, water, lime gelatin, lime juice, and whole limes. The gelatin package reads "JELL O Lime Artificial Flavor Gelatin Dessert."
  • Lime gelatin mix: Lime Jell-O provides the signature flavor and helps the filling set.
  • Boiling water: Dissolves the gelatin to form the filling base.
  • Ice cubes: Quickly cool the dissolved gelatin so the whipped topping keeps its texture when mixed.
  • Key lime juice: Fresh key limes are ideal for both juice and zest; bottled key lime juice works if fresh limes aren’t available.
  • Cool Whip: A frozen whipped topping that creates an airy, creamy filling once thawed and folded in.
  • Graham cracker crust: A store-bought 10-inch crust keeps the recipe fast and easy.

See the recipe card below for exact amounts and full directions.

Instructions

Dissolved lime gelatin in a mixing bowl beside a graham cracker crust, whipped topping, and fresh limes. The mixture is prepared as the base for key lime Jello pie filling.

In a large bowl, whisk the lime gelatin with the boiling water until fully dissolved, about 3 minutes.

Lime gelatin mixture in a bowl with ice cubes added to cool it before mixing. A prepared graham cracker crust and fresh limes are arranged nearby.

Add the ice cubes and whisk about 2 minutes until melted and the mixture is cooled. Remove any remaining ice.

Smooth key lime pie filling in a mixing bowl before being poured into the crust. Fresh limes and a prepared graham cracker crust are positioned beside the bowl.

Whisk in the key lime juice and the thawed Cool Whip until the filling is smooth and uniform.

Whole key lime Jello pie set in a graham cracker crust before slicing. Fresh limes and whipped topping are arranged nearby as serving accompaniments.

Pour the filling into the graham cracker crust and smooth the top. Do not overfill the crust. Refrigerate for at least 4–5 hours or overnight until fully set.

Slice of key lime Jello pie being lifted from the pie with a server. Whipped cream, a lime slice, and lime zest decorate the top, showing the pie’s smooth and creamy texture.

Slice and serve chilled. Garnish with whipped cream, lime slices, and lime zest for a fresh finish.

Substitutions

  • Key lime juice: Regular lime or Persian lime juice can be used in place of key lime juice.
  • Cool Whip: Substitute stabilized homemade whipped cream if you prefer a fresh topping.
  • Graham cracker crust: Use a homemade graham crust or a vanilla wafer crust if desired.

Expert Tips

Chill thoroughly: Allow plenty of time in the refrigerator so the filling sets and holds its shape.

Cut straight down: Slice the pie with a straight downward motion to keep neat, upright pieces.

Finish with zest: Lime zest adds color and a burst of fresh flavor—sprinkle a little over each slice before serving.

Slice of key lime Jello pie with a bite-sized piece resting on a fork in the foreground. Whipped cream, lime zest, and a lime slice top the pie, highlighting its thick and creamy filling.

Did you make this recipe? I’d love to hear how it turned out—please take a moment to leave a rating and review if you try it.

FAQ

Can I use regular lime juice instead of key lime juice?

Yes. Regular lime juice works well and still yields a delicious lime-flavored pie.

Can I freeze key lime pie?

Yes. Freeze for up to 3 months; thaw overnight in the refrigerator before serving.

Why didn’t my pie set?

If the pie doesn’t set, the gelatin likely wasn’t fully dissolved before adding the other ingredients. Bright green flecks indicate undissolved gelatin—continue whisking until smooth. Also measure the lime juice carefully; too much acid can interfere with the gelatin’s setting ability.

Overhead view of a slice of key lime Jello pie topped with whipped cream, lime zest, and a lime slice. Fresh lime slices and a fork sit beside the plate.

📖 Recipe

Close-up of a slice of key lime Jello pie with a bite on a fork beside it. The pie is topped with whipped cream, lime zest, and a lime slice, showing its airy and creamy whipped texture.

No Bake Key Lime Jello Pie

A quick no-bake key lime pie made with lime Jell-O, Cool Whip, and a graham cracker crust—refreshing and simple for summer gatherings.
Recipe by: Kelsey Smith
Prep time: 15 minutes
Cook time: 0 minutes
Chill time : 5 hours
Total time: 5 hours 15 minutes
Servings: 8 servings

Equipment

  • Large mixing bowl
  • Whisk
  • Silicone spatula

Ingredients

  

  • 1 (3-ounce) box Jell-O Lime Gelatin Dessert Mix
  • ⅔ cup boiling water
  • 1 cup ice cubes
  • 3 tablespoons key lime juice
  • 1 (8-ounce) tub Cool Whip thawed
  • 1 (10-inch) graham cracker crust
  • Whipped cream for garnish
  • Key limes for garnish

Instructions

 

  • Dissolve the gelatin: In a large mixing bowl, whisk the lime Jell-O with the boiling water until fully dissolved, about 3 minutes.
  • Chill with ice: Add the ice cubes and whisk for about 2 minutes, until the ice cubes are melted. Remove any remaining ice cubes.
  • Add lime and Cool Whip: Whisk in the lime juice and the Cool Whip until smooth and fully combined.
  • Fill and chill: Pour the mixture into the graham cracker crust and smooth the top, being careful not to overfill the crust. Refrigerate for at least 4–5 hours or overnight, until fully set.
  • Slice and serve: Slice and serve chilled. Garnish with whipped cream, lime slices, and lime zest.

Notes

Storage: Keep leftovers covered in the refrigerator for up to 4 days. Serve directly from the fridge for the best texture; the filling stays light and creamy when cold.

Freezer: Freeze the pie for up to 3 months. Wrap tightly with plastic wrap and foil, then thaw overnight in the refrigerator before serving.

Nutrition

Calories: 220kcalCarbohydrates: 31gProtein: 3gFat: 9gSaturated Fat: 4gPolyunsaturated Fat: 0.5gMonounsaturated Fat: 4gCholesterol: 1mgSodium: 180mgPotassium: 62mgFiber: 0.5gSugar: 20gVitamin A: 24IUVitamin C: 2mgCalcium: 29mgIron: 1mg
Course: Dessert
Cuisine: American
Keyword: Cool Whip, jello, pie
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More No-Bake Desserts

Looking for more easy no-bake ideas? Try these similar recipes.

  • No Bake Key Lime Jello Pie with Cool Whip
  • No-Bake Banana Split Pie
  • Chocolate Peanut Butter Rice Krispie Treats
  • Strawberry Cheesecake Dip with Cool Whip