No Bake Key Lime Pie

Highlighted under: Indulgent Baking Ideas

Tangy and refreshing, this no-bake key lime pie really feels like a slice of summer, no matter the season. The rich, creamy filling is perfectly balanced with the bright acidity of the key limes, and the graham cracker crust adds just the right amount of crunch. I can still remember the first time I made it for my best friend, who couldn’t stop raving about it. Honestly, it was super simple, yet the flavor felt so fancy. If you need a quick dessert idea that impresses, this one’s a winner.

Created by

The Meals By Sophia Team

Last updated on 2026-05-20T22:46:19.029Z

Why This Works So Well

  • You only need a handful of ingredients
  • The lime juice really brightens everything up
  • You can make it a day ahead, which saves time

What to Know Before Making No Bake Key Lime Pie

This no-bake key lime pie is all about simplicity, so keep those ingredients handy. A handful of staples comes together to create something that feels special without being a hassle. If you happen to have fresh key limes, by all means use them; they brighten everything up. But if you can only find bottled juice, don't worry too much. It still makes a lovely pie.

Since this pie needs time to chill, I usually try to make it the day before I plan to serve it. That way, it’s well set and cold. You'll want to ensure it has at least four hours in the fridge, but letting it sit overnight yields even better results. The longer it chills, the more those flavors meld together.

Ingredients

For the crust

  • 1 1/2 cups graham cracker crumbs
  • 1/3 cup granulated sugar
  • 1/2 cup unsalted butter, melted

For the filling

  • 1 (14 oz) can sweetened condensed milk
  • 1/2 cup sour cream
  • 3/4 cup key lime juice (fresh or bottled)
  • Zest from 2 limes
  • Whipped cream for topping

Instructions

Make the crust

In a medium bowl, mix the graham cracker crumbs, sugar, and melted butter until it resembles wet sand. Press this mixture evenly into the bottom and up the sides of a 9-inch pie dish. Honestly, I usually just use my fingers, but you can use the bottom of a glass to get it really packed.

Prepare the filling

In a large bowl, combine the sweetened condensed milk, sour cream, key lime juice, and lime zest. Beat everything together until it’s smooth and creamy. Just a quick tip: if you can find key limes, use those for even better flavor, but bottled juice works great, too.

Assemble the pie

Pour the filling into the prepared crust and spread it evenly. Once you’ve got that nice and smooth, cover the pie with plastic wrap and pop it in the fridge for at least 4 hours, or overnight if you can wait. My partner has been known to try and sneak a piece early, so good luck!

Serve

When you’re ready to serve, whip up some cream if you like and spread it on top. Slice it up and enjoy! Trust me, the tanginess combined with the creaminess is just too good.

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Pro Tips

  • Experiment with different citrus if you're feeling adventurous.
  • If you want a thicker filling, reduce the lime juice a little.
  • Use a food processor for the crust if you want it super fine.

Troubleshooting

If your filling seems too runny after mixing, it might be that the lime juice was a bit too fresh, or you didn’t mix your sweetened condensed milk and sour cream long enough. Give it another quick whisk until it's smooth and creamy. If it still doesn't seem thickening up, try letting it chill for a bit longer—it might set better as it cools in the fridge.

Conversely, if it feels too thick, that could be because it's been in the fridge too long or wasn't mixed enough initially. In that case, just add a splash of milk to loosen it up when you're ready to serve, and give it a good stir.

No Bake Key Lime Pie Variations Worth Trying

Feeling adventurous? You can mix in some shredded coconut into the filling for a tropical twist that complements the key limes. Just about a half cup should do it, but taste as you go! Or, if you want a deeper flavor, consider adding just a dash of vanilla extract to the filling. It adds a little warmth that can balance the tangy lime nicely.

For a different kind of crust, you might try crushed vanilla wafer cookies or even chocolate graham crackers if chocolate and lime are your thing. Just remember, whatever you choose, stick to the same amount as the graham cracker crumbs so your crust has the right texture. There's always room for personality in your pies!

Questions About Recipes

→ Can I use regular limes instead of key limes?

You can, but I wouldn't suggest it, since they're not as tart. However, they’ll still work in a pinch!

→ How long does it last in the fridge?

Honestly, it can stay good for about a week, but it’s best in the first few days while it’s fresh.

→ What can I use instead of sour cream?

Greek yogurt is a great substitute, and it actually adds a nice tang too!

No Bake Key Lime Pie

Prep Time15 minutes
Cooking Duration0 minutes
Overall Time4 hours

Created by: The Meals By Sophia Team

Recipe Type: Indulgent Baking Ideas

Skill Level: Beginner

Final Quantity: 8 servings

What You'll Need

For the crust

  1. 1 1/2 cups graham cracker crumbs
  2. 1/3 cup granulated sugar
  3. 1/2 cup unsalted butter, melted

For the filling

  1. 1 (14 oz) can sweetened condensed milk
  2. 1/2 cup sour cream
  3. 3/4 cup key lime juice (fresh or bottled)
  4. Zest from 2 limes
  5. Whipped cream for topping

How-To Steps

Step 01

In a medium bowl, mix the graham cracker crumbs, sugar, and melted butter until it resembles wet sand. Press this mixture evenly into the bottom and up the sides of a 9-inch pie dish. Honestly, I usually just use my fingers, but you can use the bottom of a glass to get it really packed.

Step 02

In a large bowl, combine the sweetened condensed milk, sour cream, key lime juice, and lime zest. Beat everything together until it’s smooth and creamy. Just a quick tip: if you can find key limes, use those for even better flavor, but bottled juice works great, too.

Step 03

Pour the filling into the prepared crust and spread it evenly. Once you’ve got that nice and smooth, cover the pie with plastic wrap and pop it in the fridge for at least 4 hours, or overnight if you can wait. My partner has been known to try and sneak a piece early, so good luck!

Step 04

When you’re ready to serve, whip up some cream if you like and spread it on top. Slice it up and enjoy! Trust me, the tanginess combined with the creaminess is just too good.

Extra Tips

  1. Experiment with different citrus if you're feeling adventurous.
  2. If you want a thicker filling, reduce the lime juice a little.
  3. Use a food processor for the crust if you want it super fine.

Nutritional Breakdown (Per Serving)

  • Calories (kcal): 265
  • Total Fat (g): 14.5
  • Saturated Fat (g): 8.4
  • Cholesterol (mg): 40
  • Sodium (mg): 220
  • Total Carbohydrates (g): 32.8
  • Dietary Fiber (g): 0.6
  • Sugars (g): 22.8
  • Protein (g): 3.2