This frozen key lime pie is the ultimate in refreshing desserts. It is super creamy with plenty of citrus pop. The best part is that it only takes 4 ingredients to make!

Slice of creamy frozen key lime pie with fluffy filling in graham cracker crust on plate with remaining pie in background.

If you are looking for a cool and creamy summer dessert, you are in the right place. This super simple no-bake key lime pie comes together in just a few minutes. The hardest part is waiting for it to chill.

It is a little bit surprising that it took me this long to post this recipe. My husband fell in love with it when he had it at my grandma’s house very early in our relationship.

Since then, my grandma has made them for his birthday. He and Little Dude have requested the pie randomly throughout.

Ingredients including graham cracker crust, Cool Whip, key lime juice, and sweetened condensed milk ready to be made into no bake key lime pie.

Fluffy key lime filling in graham cracker pie crust, ready to be chilled.

But we already had a classic baked key lime pie and a no bake key lime pie with cream cheese recipe that are both hits. (Not to mention the key lime ice cream and no bake key lime cheesecake jars.)

So, when it came time to share this recipe, I used lemon juice for a little variety. That’s how the creamy no bake lemon pie was born.

Anyway, Little Dude requested this pie… again. So, I decided it was a crime to keep it from you any longer.

It is so simple to make and really delicious. You will find yourself making it again and again as well.

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Making the Pie

We almost always use a store bought graham cracker crust to keep things simple. However, you can make your own.

If you are making your own, feel free to play with different types of cookie crumbs. Of course, graham crackers work, but so do vanilla wafers, golden Oreos, or even gingersnaps.

The filling is super simple. Just stir together some key lime juice and sweetened condensed milk.

Pie serving lifting slice of frozen key lime pie out of the pie dish showing the creamy filling that has a slightly fluffy texture.

Slice of no bake key lime pie on small plate with remaining pie in the background.

It will be loose right at first, but it will start to thicken up almost immediately. The acid in the juice reacts with the condensed milk to make it thick again.

Once you have that mixture stirred together, add a tub of Cool Whip. Mix that up and put it in the crust.

It should be thick enough that you can almost serve it right away, but of course, it will set a bit more with some chilling. You can put it in the fridge, or do what we do and freeze it.

Close up of a slice of frozen key lime pie showing the creamy texture that is still soft despite being frozen.

We like to keep it in the freezer and steal a slice when we need something cold and delicious. We are all sad when it’s gone.

I hope you give this recipe a try. Maybe it will become a favorite in your family like it has in ours!

5 from 2 ratings

Frozen Key Lime Pie

Author: Carlee

Servings: Servings

This is the easiest no bake key lime pie out there. It is creamy, citrusy, cold and oh so delicious. You can serve it chilled or even frozen for a perfect summer dessert.

Prep: 5

Additional Time 2

Total: 5

Ingredients

▢ 14 ounces sweetened condensed milk
▢ ⅓ cup key lime juice
▢ 8 ounces Cool Whip defrosted
▢ 8 or 9 inch graham cracker crust

Instructions

In a large mixing bowl, stir together the key lime juice and sweetened condensed milk. It will be loose at first but should come back to condensed milk consistency as you stir.
14 ounces sweetened condensed milk, ⅓ cup key lime juice
Fold in the whipped topping until it is incorporated.
8 ounces Cool Whip
Spread key lime filling mixture in graham cracker crust.
8 or 9 inch graham cracker crust
Chill or freeze for at least 2 hours.
Serve cold or frozen.