Post originally published June 2020 and updated June 2025 with new lime-zest tip and step-by-step photos
This fresh lime tart—sometimes called an easy key-lime tart with graham-cracker crust—is my favorite quick summer dessert. As elegant and delicious as it is, it is simple to prepare. My 13 year old daughter prepared this entire recipe from scratch as pictured here! She is a talented baker but even inexperienced bakers can prepare this delicious tart.
Updated June 2025 with oven instructions.
| Servings |
- 1/2 cup lime juice, plus zest from 1 lime
- 14 oz sweetened condensed milk
- 3 large Egg Yolks
- 1.5 cups graham cracker crumbs
- 6 Tbsp butter melted
- 1/3 cup sugar
- edible flowers from Chef's Garden
Ingredients
| |
- Preheat oven to 350° F.
- Combine graham cracker crumbs, melted butter and sugar until crumbly mixture.
- Press graham cracker mixture into a fluted tart pan with removable base using a large, flat spatula.
- Place tart pan on cookie sheet and cook for 10 minutes.
- Remove from oven, press crust down again gently with flat spatula, and allow to cool.
- Whisk together egg yolks, sweetened condensed milk, lime juice and zest until combined.
- Pour into cooled pie crust. Bake for 15 minutes or until filling is set.
- Cool on rack then chill in the refrigerator for 2 hours.
- Decorate the lime tart with edible flower petals before serving. You may also garnish with thin lime slices or lime zest.
Persian vs. Key Limes: What’s the Difference?
While most grocery baskets are filled with the familiar Persian (or Tahitian) lime—larger, nearly seedless, and uniformly deep-green—Key limes are tiny, thin-skinned, and turn yellow-green when fully ripe. The difference goes beyond appearance: Persian limes deliver a straightforward tartness, whereas Key limes pack a sharper acidity layered with floral, almost spicy notes. Their juice is slightly sweeter and more aromatic, which is why classic Key-lime pie tastes brighter and less one-dimensionally sour than desserts made with standard limes. Practical tip: because Key limes yield less juice (you’ll need about 12–15 to equal the juice from 4–5 Persian limes), plan to buy them by the bag and zest gently—their delicate rind holds much of that signature fragrance.
Decorating with Edible Flowers
The edible flowers from Chef’s Garden in Huron, Ohio takes this tart over the top with gorgeousness! The edible flowers easily transforms a simple dessert into a dessert that looks divine enough for a celebration – but easy enough for a weeknight dessert.
Make-Ahead and Storage Tips
You can streamline serving day by tackling the recipe in stages. Bake the graham-cracker crust up to two days ahead, let it cool completely, then slip the entire tart pan into a large zip-top bag or wrap it tightly in plastic; the crust stays crisp at room temperature. The filling can be whisked together the night before—store it in an airtight container in the refrigerator and give it a quick stir before pouring. Once baked, the assembled tart keeps beautifully for up to three days if covered and chilled; just wait until right before presenting to scatter the edible-flower petals so they stay vibrant. Need to plan even further out? Freeze the cooled, ungarnished tart (still in its pan) for up to one month, wrapped in two layers of plastic plus a layer of foil. Thaw overnight in the fridge, pat away any condensation with a paper towel, and garnish as usual.
FAQ – Fresh Lime Tart with Edible Flowers
Q: I can’t find Key limes—will regular Persian limes ruin the flavor?
A: Not at all. Use the same volume of Persian-lime juice, then bump up the zest to two full limes for extra aroma. If you want a closer “Key-lime” tang, blend two parts Persian-lime juice with one part lemon juice.
Q: What size tart pan should I use if I don’t own a fluted pan with a removable bottom?
A: An 8- or 9-inch springform pan works well; press the crust only halfway up the sides. You can also divide the crust and filling among six 4-inch mini tart pans—reduce the bake time on the filling to about 10 minutes.
Q: Can I make this dessert gluten-free?
A: Yes—substitute certified GF graham-style crumbs (or pulse GF sugar cookies in a food processor). Keep the butter and sugar amounts the same and follow the crust instructions as written.
Q: Does the recipe freeze well after baking?
A: Absolutely. Cool the tart completely, wrap the pan in two layers of plastic and one of foil, and freeze up to one month. Thaw overnight in the fridge, blot any surface moisture, and add fresh edible flowers right before serving.
Q: Is there a dairy-free option for sweetened condensed milk?
A: You can swap in a 14-ounce can of sweetened condensed coconut milk. The filling will set slightly softer and carry a light coconut note that pairs nicely with lime.