Key Lime Tart

By Maria Lichty

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Cinco de Mayo is on Saturday. Who is having a party? Even if you aren’t throwing a big bash, you still need to celebrate with good food. I am going to party all day long. It is the perfect excuse to eat chips, salsa, and guacamole from sun up to sun down:) To balance things out, I think I will eat a slice of this Key Lime Tart. It is the perfect Cinco de Mayo dessert.

Josh is a lime fanatic and his favorite dessert, hands down, is this Key Lime Tart. He makes it every year for his birthday. I offer to make him his special Key Lime Tart, but he prefers to do it on his own. Maybe he doesn’t trust me, he is very picky about his Key Lime Tart. He loves a thick tart crust with a creamy “pucker me up” filling.

If you can’t find key limes, you can use regular limes, but the little key limes are so cute. I love them! You can also buy bottled key lime juice if you are in a pinch. The tart dough is easy to make, you combine all of the ingredients in the food processor. You do have to chill the dough for at least 30 minutes, so make sure you start early enough before your big party!

The key lime filling is also easy to make. This is a great tart to serve at parties because it is so easy to make, but impressive to serve. Everyone loves it! You can serve the tart with whipped cream or straight up!

Add this Key Lime Tart to your Cinco de Mayo menu. You and your party guests will not be disappointed. And if you eat the entire tart before the guests arrive, I won’t tell:) Sometimes it is hard to share, especially when it comes to dessert.

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Key Lime Tart

Josh's all-time favorite dessert! He is obsessed with this Key Lime Tart...I think it is pretty tasty too:)
3.67 from 3 votes


  • For the tart dough:
  • 1 1/2 cups all-purpose flour
  • 1/2 cup powdered sugar
  • 1/4 teaspoon salt
  • 9 tablespoons frozen butter cut into small pieces
  • 1 large egg yolks
  • For the key lime filling:
  • 1 14-ounce can sweetened condensed milk
  • 4 large egg yolks
  • 2 teaspoons key lime zest
  • 3/4 cup key lime juice


  • 1. To make the tart dough: Put the flour, powdered sugar, and salt in a food processor and pulse until combined. Drop the butter pieces over the dry ingredients and pulse until the butter is coarsely cut in. Break up the egg yolk with a fork and add a little at a time, pulsing after each addition. When the entire egg yolk is in, process in long pulses, about 10 seconds each, until the dough forms clumps. Turn the dough out onto a work surface and gently knead to form a ball.
  • 2. Butter a 9-inch fluted tart pan with a removable bottom. Press the dough evenly over the bottom and up the sides of the pan. Don't press too hard, you don't want the crust to lose its crumbly texture. Freeze the crust for at least 30 minutes, or longer, before baking.
  • 3. To make the key lime filling: Preheat the oven to 350 degrees F. In a medium bowl, combine sweetened condensed milk, lime zest, key lime juice, and egg yolks. Whisk until smooth. Remove tart dough from the freezer. Pour mixture into tart pan. Bake until filling is set around edge but still slightly loose in center and crust is golden brown, about 30 minutes.
  • 4. Cool tart completely at room temperature; then refrigerate until chilled, at least 2 hours before serving.

Have you tried this recipe?

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I'm Maria and my husband is Josh. We share a love of cooking, baking, and entertaining. We enjoy creating recipes that are simple, fresh, and family friendly. We love sitting around the table with good food, good conversation, and good friends and family! Our kitchen is always open!
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Desserts Pies/Tarts

3.67 from 3 votes (2 ratings without comment)

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  1. I made this recipe a few weeks ago using limes from my grandpa’s farm. Farm-to-table in the truest form!

  2. 3 stars
    I tried this and the tart shell ended up being raw even though the tart filling was cooked. I should have blind baked it first

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