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Triple Berry Pie Recipe

4.7 from 96 reviews

This Triple Berry Pie recipe combines fresh or frozen raspberries, blueberries, and blackberries in a luscious, sweetened filling thickened with cornstarch and encased in a flaky homemade pie crust. The pie features a classic lattice crust top that bakes up golden and crisp, making it a perfect dessert for berry lovers. Simple to prepare with straightforward steps, this pie requires simmering the berries to develop flavor and a careful baking process to achieve the perfect texture and color.

Ingredients

Scale

Pie Crust

  • Homemade pie crust for a 9-inch deep dish pan (enough for both bottom and top crust)

Filling

  • 7 cups fresh or frozen raspberries, blueberries, and blackberries (about 2 1/3 cups of each type of berry)
  • 1 cup granulated sugar (plus extra for sprinkling on top)
  • 1 Tablespoon lemon juice
  • 4 Tablespoons cornstarch
  • 2 Tablespoons butter

For Topping

  • 1 large egg white, beaten
  • Extra granulated sugar for sprinkling

Instructions

  1. Cook berries: Add berries, sugar, and lemon juice to a large saucepan over medium heat.
  2. Simmer mixture: Let the mixture simmer until warm and juicy, about 5-10 minutes, stirring gently occasionally. Taste and add more sugar if desired, up to an additional 1/4 cup.
  3. Thicken filling: Spoon out about 1/2 cup of berry juice into a bowl and stir the cornstarch into the juice until smooth.
  4. Add cornstarch mixture: Return the berry pot to a simmer and slowly stir in the cornstarch mixture, stirring gently to avoid mashing berries, cooking until thickened, about 2-5 minutes.
  5. Cool filling and add butter: Remove from heat, stir in butter, and allow the filling to cool for 15 minutes.
  6. Prepare pie shell: Pour the cooled filling into an unbaked 9-inch deep dish pie shell.
  7. Add lattice or top crust: Create a lattice crust or place a whole top crust with holes pricked for steam to escape (see lattice instructions below).
  8. Seal and glaze: Pinch the edges of the top and bottom crusts together and crimp if desired. Brush the top crust with beaten egg white and sprinkle lightly with sugar.
  9. Bake pie: Bake at 400°F (204°C) for 40-45 minutes. Check after 25 minutes and cover with foil if the crust is getting too brown.
  10. Cool pie: Remove from oven and transfer to wire cooling rack. Allow pie to cool completely for several hours before serving or refrigerate overnight.
  11. Roll out crust: Roll out the crust on a lightly floured surface or parchment paper into a circle 1-2 inches larger than the pie dish.
  12. Cut strips for lattice: Use a pizza cutter to cut dough into strips of desired width.
  13. Lay first layer: Lay the longest strip across the middle of the pie, then lay shorter strips parallel on either side, spaced evenly.
  14. Fold back even strips: Fold back second and fourth strips, lay a perpendicular shorter strip across, then unfold the folded strips over it.
  15. Fold back odd strips: Fold back first, third, and fifth strips, place another perpendicular strip, then unfold the folded strips over it.
  16. Repeat lattice weaving: Continue folding and placing strips until pie is covered with a lattice crust.
  17. Trim excess dough: Trim any overhanging dough strips flush with the pie edge.
  18. Pinch edges: Pinch together the lattice top and bottom crusts, then crimp the edges for a finished look.

Notes

  • If using frozen berries, thaw and drain excess liquid before cooking to avoid a watery filling.
  • Adjust sugar quantity according to the sweetness of your berries and personal taste.
  • To prevent the crust from over-browning, tent with foil after 25 minutes of baking.
  • Allow the pie to cool completely to ensure the filling sets properly before slicing.
  • The lattice crust can be substituted with a whole top crust; just remember to pierce holes to allow steam to escape during baking.
  • Use cold butter for the crust to achieve optimal flakiness.
  • Be gentle while stirring the berry mixture to keep the berries intact for a beautiful presentation.

Keywords: triple berry pie, berry pie, homemade berry pie, lattice pie crust, mixed berry dessert, berry pie recipe