Blueberry Almond Tart

Name: Blueberry Almond Tart
Ingredients: 3 lbs (2 quarts or 8 cups) fresh blueberries; 1/2 cup granulated sugar; 1 tablespoon freshly squeezed lemon juice; 2 large egg yolks; 2 teaspoons cornstarch; 3 tablespoons unsalted butter; 1 teaspoon finely grated lemon zest; 1 cup all purpose flour; 1/2 cup sliced almonds, lightly toasted and divided; 2 tablespoons granulated sugar; 1/4 teaspoon salt; 1/2 cup (1 stick) chilled unsalted butter, cut into 1/2-inch cubes; 1 large egg yolk; 1/4 teaspoon almond extract