Key Lime Pie is a light, no-bake frozen dessert that’s perfect for hot summer days and backyard barbecues. This version is simple to make, lower in calories, and friendly for Weight Watchers plans.
If you enjoy pie recipes, try Cherry Cream Cheese Pie, Joanna Gaines’ French Silk Pie, or Lemon Meringue Pie for Two for more easy dessert ideas.
Why You Will Love This Recipe
This recipe is ideal when you want a quick, refreshing dessert without turning on the oven. It takes just a few minutes to assemble, especially if you use a store-bought reduced-fat graham cracker crust. The filling is creamy, tangy, and surprisingly light. You can customize flavors easily by switching the gelatin or yogurt to other varieties.
Flavor variations: Swap the lime gelatin and key lime yogurt for strawberry, lemon, or other fruit flavors. Try different low-fat yogurts for a range of tastes and textures — the recipe is very adaptable.
Ingredients Needed
- Reduced-fat graham cracker crust – a ready-made crust keeps this recipe fast and easy.
- Sugar-free lime gelatin – or regular lime gelatin if you prefer; other flavors work too.
- Boiling water – needed to dissolve the gelatin.
- Fat-free whipped topping – a convenient frozen whipped topping or freshly whipped fat-free cream.
- Fat-free key lime yogurt – two small containers; other low-fat yogurt flavors can be used for variations.
- See the recipe card below for exact measurements.
How to Make Key Lime Pie
Step 1: In a large bowl, dissolve the gelatin in boiling water and allow it to cool for 10–15 minutes. Cooling slightly prevents the filling from becoming too thin when other ingredients are added.
Step 2: Whisk in the yogurt until smooth.
Step 3: Gently fold in the whipped topping with a spatula to keep the filling light and airy. Spread the mixture evenly into the graham cracker crust. Refrigerate for at least 2 hours, or overnight for a firmer texture.
Slice into 8 pieces. Serving size: 1 slice.
What to Serve with Key Lime Pie
Key lime pie pairs well with light, refreshing accompaniments. A dollop of extra whipped topping and a sprinkle of lime zest brighten the presentation and flavor. Fresh berries such as strawberries or raspberries add color and a complementary sweetness. For drinks, consider iced tea, lemonade, or a chilled coffee to balance the tartness of the pie.
Pro Tips (from experience)
- Allow the dissolved gelatin to cool for 10–15 minutes before mixing to avoid a runny filling.
- Fold the whipped topping in gently to keep the filling fluffy.
- Chill the pie overnight when possible — the texture firms up and the flavors meld.
🍽️ Serving Suggestions
- Top with extra whipped topping and lime zest for a bright finish.
- Serve with fresh berries for contrast and color.
- Pair with iced coffee, iced tea, or a light summer beverage.
Recipe FAQs
Traditional key lime pie is a dessert and contains sugar and calories, but this lighter, no-bake version uses reduced-fat ingredients and sugar-free gelatin to lower calories and WW points.
Store leftovers in an airtight, food-safe container in the refrigerator. The pie will keep for several days when covered to prevent it from absorbing other fridge odors.
Key lime pie balances sweet and tart flavors with a creamy texture. Even in no-bake versions, the tangy citrus and smooth filling create a satisfying contrast with the sweet graham crust.
Other Recipes to Try
-
Best Weight Watcher Desserts
-
Weight Watcher Brownies
-
Weight Watcher High Protein Recipes
-
Chicken Egg Roll In a Bowl
If you make this Key Lime Pie or any other recipe, please leave a star rating and share your experience in the comments — feedback is always appreciated.
Weight Watchers Key Lime Pie
Description
Weight Watchers Key Lime Pie is a light, no-bake frozen dessert that’s easy to prepare and perfect for warm weather. It’s a great make-ahead option for gatherings.
Ingredients
- 1 reduced-fat graham cracker crust
- 1 oz package sugar-free lime gelatin
- ¼ cup boiling water
- 1 (8 ounce) container fat-free whipped topping
- 2 (6 ounce) containers fat-free key lime pie yogurt
Instructions
- In a large bowl, dissolve the gelatin in boiling water. Let cool for 10–15 minutes.
- Whisk in the yogurt until smooth.
- Gently fold in the whipped topping until combined and fluffy.
- Spread the filling into the graham cracker crust.
- Refrigerate for at least 2 hours or until set.
- Slice into 8 pieces. Serving size: 1 slice.
Notes
Points Plus: 2
myWW points: Blue 7; Green 7; Purple 7 (WW recipe builder)
Nutrition
- Serving Size: 1/8th of the pie
- Calories: 148
- Sugar: 8g
- Fat: 4g
- Saturated Fat: 3g
- Carbohydrates: 23g
- Fiber: 1g
- Protein: 3g