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Blueberry Pie on plate

Summer Blueberry Mascarpone Tart

Summer Blueberry Mascarpone Tart: Buttery shortbread walnut crust, slightly sweet creamy mascarpone, fresh blueberries, a touch of sugar & lemon. Delicious!

Course Dessert
Cuisine American
Keyword blueberry, dessert, Tart
Prep Time 30 minutes
Cook Time 25 minutes
Total Time 55 minutes
Servings 10 servings
Calories 400 kcal
Author Holly Sander


For the crust:

  • 1 ten and a half inch tart pan with a removable bottom, or a pie pan
  • 1 1/4 cup all-purpose flour
  • 1/4 teaspoon rounded salt
  • 1/2 cup ground walnuts
  • 1/2 cup plus 11/2 tablespoons unsalted butter at room temperature
  • 1/4 cup sugar
  • 1/2 teaspoon vanilla extract

For the creme filling:

  • 12 ounces Mascarpone
  • 2 tablespoons plus 1 teaspoon sugar

For the blueberry topping:

  • 4 cups fresh blueberries rinsed and dried
  • 2 tablespoons cornstarch dissolved in two tablespoons of warmish water
  • 2 tablespoons fresh lemon juice
  • 1/3 cup sugar
  • 2 tablespoons water
  • pinch of salt
  • Zest from 1/2 a lemon optional


  1. Preheat oven to 350°F.
  2. Stir together flour, salt and ground walnuts.
  3. With a mixer, beat butter, sugar, and vanilla until pale and fluffy, about 2-3 minutes. Slowly add walnut mixture, and beat until just combined.
  4. Press the dough into the tart pan with your fingers until it is evenly distributed on the bottom and sides of pan. Chill for 15 minutes in the freezer. Prick with a fork all over.
  5. Place the pan in preheated oven and bake for 20 minutes or until lightly browned.
  6. Remove from oven, and cool completely.

For the filling:

  1. Mix together sugar and mascarpone. Layer the mascarpone mixture onto the cooled crust.

For the blueberry topping:

  1. Stir the sugar, 2 tablespoons water, lemon juice, and 2 tablespoons of the cornstarch/water mixture into a saucepan over medium heat. Simmer for 1-2 minutes until thickened and sugar has dissolved.
  2. Add 2 cups of blueberries, then bring to a boil and simmer until juicy and thick - about 4 minutes (if they get too thick then add a little water to thin them out).
  3. Take the pan off the heat and add the remaining 2 cups of berries. Gently fold them in, coating completely.
  4. Spread the berry topping over the cream base and let set for 5-10 minutes. Top with lemon zest and serve.

Recipe Notes

  • Prep time: 30 minutes
  • Baking time for crust: 20 minutes
  • Cooling time for crust: 60 minutes