Homemade Key Lime Pie Recipe (2024)

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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!

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.

Homemade Key Lime Pie Recipe

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.

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!

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!

Ingredients

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

Instructions

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.
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.
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.
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.
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.

Notes

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

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