Blueberry Key Lime Tart

This Blueberry Key Lime Tart layers creamy lime custard in a graham cracker crust with a fresh blueberry topping. It’s a citrus and blueberry tart that’s simple to make ahead and serve chilled.

Course Dessert

Cuisine American

Keyword blueberry key lime tart, blueberry lime tart, citrus and blueberry tart, key lime tart with blueberry topping

Prep Time 25

Cook Time 30

Chilling 3

Total Time 3 55

Servings

Calories 375kcal

Author Cathy Pollak

Equipment

9" fluted tart pan with removeable bottom Makes slicing and serving easy.
measuring cups and spoons For accuracy.
Saucepan For preparring the blueberry topping.

Ingredients

Crust:

10 sheets (140 g) graham crackers
3 tbsps (37 g) granulated sugar
5 tbsps (70 g) butter melted

Filling:

1 can (14 oz / 396 g) sweetened condensed milk
½ cup (120 ml) bottled key lime juice (my favorite brand) or fresh
zest of two limes (regular or key limes)
4 egg yolks room temperature
¼ cup (50 g) granulated sugar
¼ tsp (1 g) table salt

Blueberry Topping:

3 cups (450 g) fresh blueberries divided
½ cup (120 ml) fruit juice (apple) or water
⅛ tsp (0.5 g) table salt
1 tsp (5 ml) bottled key lime juice
3 tbsps (37 g) granulated sugar
1 tbsp (8 g) cornstarch
lime slices for garnish optional
whipped cream optional

Instructions

Preheat the oven to 350°F (175°C).
For the crust: Pulse the graham crackers in a food processor, or crush in a sealed plastic bag until finely ground.
10 sheets (140 g) graham crackers
Stir crumbs with sugar and melted butter until evenly coated.
3 tbsps (37 g) granulated sugar, 5 tbsps (70 g) butter
Press mixture into the bottom and sides of a 9–10 inch (23–25 cm) tart pan with a removable base. Bake 8–10 minutes, until lightly golden. Set aside or chill to firm.
For the filling: In a medium bowl, whisk sweetened condensed milk, key lime juice, lime zest, egg yolks, sugar, and salt until smooth.
1 can (14 oz / 396 g) sweetened condensed milk, ½ cup (120 ml) bottled key lime juice, zest of two limes , 4 egg yolks, ¼ cup (50 g) granulated sugar, ¼ tsp (1 g) table salt
Pour the filling into the cooled crust, leaving a little space at the top.
Bake at 325°F (165°C) until the edges are set but the center is slightly jiggly, about 25–30 minutes. Rotate halfway for even baking.
Cool to room temperature, then refrigerate at least 2 hours or overnight until firm.
Carefully remove the tart from the pan and set on a serving plate.
For the topping: Rinse the blueberries and set aside.
3 cups (450 g) fresh blueberries
In a medium saucepan, whisk fruit juice or water, salt, lime juice, sugar, and cornstarch. Cook over medium heat until the sugar dissolves.
½ cup (120 ml) fruit juice (apple), ⅛ tsp (0.5 g) table salt, 1 tsp (5 ml) bottled key lime juice, 3 tbsps (37 g) granulated sugar, 1 tbsp (8 g) cornstarch
Add 1 cup (150 g) of blueberries and bring the mixture to a boil.
Remove from the heat and pour over the remaining blueberries, stirring gently to coat. Let cool 5 minutes.
To finish: Spoon the blueberry topping over the chilled tart, spreading to the edges. Refrigerate at least 3 hours before serving. Garnish with lime slices and whipped cream, if desired.
lime slices for garnish, whipped cream

Notes

Bottled key lime juice is best for this tart. Fresh key limes work too, but you’ll need a lot of them.
Apple juice works well for the topping, but white grape juice or even water can be used.
Frozen blueberries are fine. Thaw and drain them first, then stir a few into the sauce and fold in the rest gently.
A pie dish can stand in for a tart pan. You’ll just serve it straight from the dish instead of lifting it out.

For optimal outcomes when preparing this blueberry key lime tart, it's recommended to refer to the recipe details within the post. The recipe post commonly includes valuable notes, expert tips and frequently asked questions, that are not presented in the recipe card, often including how to make this recipe dairy-free, gluten free or vegan and ideas for healthy ingredient substitutions or variations.

The provided nutrition information is merely an approximation, as variations can arise depending on the specific ingredients/brands you select.

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Nutrition