This homemade key lime pie recipe is easy to make and loved by all!
Dessert - Food - Holidays - Pie

Homemade Key Lime Pie Recipe

Last updated on August 27, 2020 by Liza Hawkins

This homemade key lime pie recipe is easy to make and loved by all! It couldn’t be any easier to pull together, or any more delicious and satisfying — especially if you love tartness.

My recipe differs from many other key lime pie recipes because the secret’s in the sauce … er … filling. I add lime zest to the pie filling, because lime juice alone doesn’t make it as tart as I like!

This homemade key lime pie recipe is easy to make and loved by all!

My little sister turned thirty years old in 2013, and that particular birthday happened amid some very cool events.

That weekend we celebrated on her actual birthday by spending three days in the Dolly Sods Wilderness, something that took this older sister’s body a little time to recover from, but was completely and utterly worth it.

A weekend later we also visited my parents’ homestead to have a birthday gathering with the whole family, and to also bid her “bon voyage” because she was moving to Brooklyn a week later.

As in New York, not Maryland.

At the time, people paused when they heard this because she and her husband were farmers in Maryland.

“What’s a farmer doing moving to the big city?” they asked.

Funny thing is, we grew up just outside of Washington, D.C., and I, in particular, spent a lot of time in Georgetown and other parts of the urban sprawl in my teen years. People who know us as adults living in Frederick and more rural parts of Maryland don’t remember that the “big city” isn’t foreign to us.

But, I get it. She and Shawn are farmers, and in 2013 they were running the Community Farm at Sandy Spring Friends School. It’s hard to picture farm life and city life merging in a real-life way.

Turns out, Shawn got an amazing job working with Grow NYC, and spends his days improving New York City’s quality of life through environmental programs that transform communities block by block. It empowers all New Yorkers to secure a clean and healthy environment for future generations.

And Josie landed a position with The Battery, now working as the deputy park manager (which includes maintaining their urban farm and other educational resources).

So, that year, given the move was only a week away, I decided to forgo a regular birthday present since that would mean one more thing to pack.

Instead? I made this … it’s one of her very favorite desserts.

Homemade Key Lime Pie Recipe

Close up shot of homemade key lime pie with a sour cream topping and fresh lime zest.

This key lime pie recipe couldn’t be any easier, or any more delicious and satisfying.

Simply pour a whisked filling of sweetened condensed milk, eggs, lime juice and zest into a pre-baked store bought graham cracker crust, and then bake it off for fifteen minutes.

Homemade key lime pie cooling in a graham cracker crust, just before the sour cream topping and fresh lime zest is added.

See the little flecks of lime zest here?

This is where my recipe differs from many other key lime pie recipes.

I add lime zest to the pie filling, because lime juice alone doesn’t make it as tart as I like!

After the key lime pie has cooled completely and chilled for a while (I prefer to leave mine in the fridge overnight), then it’s covered with a tangy sour cream topping and sprinkled with more lime zest.

Because everything’s better with more zest!

This homemade key lime pie recipe is easy to make and loved by all!

This delicious and unbeatable Key Lime Pie recipe, with a few tweaks—it might even be better frozen!
Yield: 8

Homemade Key Lime Pie Recipe

Prep Time: 30 minutes
Cook Time: 15 minutes
Additional Time: 2 hours
Total Time: 2 hours 45 minutes

This homemade key lime pie recipe won't disappoint!


  • 1 graham cracker pie crust (ready-made)
  • 12 key limes or 6 regular limes (zested and juiced)
  • 3/4 cups key lime juice
  • 28oz sweetened condensed milk
  • 2 Large whole eggs
  • 1 cup sour cream
  • 2 tablespoons powdered sugar


  1. Preheat the oven to 375°F. Once it's ready, cook the pie crust for 6 minutes while you prepare the filling. Once the pie crust is out, turn the oven down to 325°F and let the pie crust cool in the fridge.
  2. Combine all of the fresh squeezed lime juice with enough bottled lime juice to equal 1 cup. Next, whisk together the juices, eggs, sweetened condensed milk and 1 tablespoon of the zest in a medium mixing bowl. Save the remaining zest for garnish later.
  3. Once the pie crust has finished cooling (in the fridge it shouldn't take long), pour the key lime pie filling into the crust and bake it for 15 minutes, or until it's just set—a little jiggle in the center is okay.
  4. Let the key lime pie cool for one hour, and then cover and transfer it to the fridge to continue to chill for at least 2 hours. Overnight is better.
  5. After 2 hours, or the next day, mix the sour cream with the powdered sugar and spread the topping evenly over the pie. Sprinkle with remaining lime zest.


This homemade key lime pie recipe is wonderful chilled as-is, and it's excellent as a frozen dessert too!


Hi, I'm Liza — a self-proclaimed word-nerd who loves getting lost in whimsical stories and epic movies. I have laid-back, practical attitude towards life and am always on the hunt for good eats, easy recipes, binge-worthy shows, relaxing road trip destinations, the perfect fizzy gin cocktail, and time to finish my novel!

9 Comments on “Homemade Key Lime Pie Recipe

    1. I’ve made this with a short bread crust, as well as just in a regular pie crust. I’m sure you can find a way to make it GF and still yummy!!!

  1. Let’s discuss just how fantastic this key lime pie is. Insanely good. EVERYONE loved it. I didn’t even have enough to do the freezing trick. I even had a family member say, “We need to make this again, SOON!”

    Here are the tweaks I made:
    Crust: I used Enjoy Life Sugar Crisp Cookies with enjoy melted butter to hold the crust together. I baked the crust at 330 for about 22-25 minutes. GF food sometimes has really odd cooking times.

    The only other tweak was to increase the baking time to about 25 minutes to get the pie to set.

    I can’t wait to try this again when I have time to make GF graham crackers.

    1. Love the tweaks, Heather! And, you’re not my only GF reader, so I appreciate you coming back to tell me the changes you’ve had to make.

      Sounds like you’ll be making another soon…. LOL


  2. HI,
    I made your key lime pie last nt and it was delicious this afternoon. But it didn’t set well, and was more of a pudding consistency, what do I need to change on my 2nd attempt? Thanks, this was a great pie that everyone loved!

    1. Hi Eva! Oven temps can definitely vary, so I wonder if you need to adjust the temp and/or time a little bit so that the pie sets better? It’s not supposed to be a super firm consistency; however, it shouldn’t be as soft as pudding and it shouldn’t be runny…. Glad it tasted good! 🙂

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