Raspberry and Blueberry Galette Recipe

whats cookin Italian Style Cuisine ― 1 cup of blueberries ∙ 1 1/2 cups red raspberries ∙ 2 tablespoon wondra flour or cornstarch ∙ 1/4 teaspoon cinnamon ∙ 1/3 cup red raspberry seedless jam ∙ Mix berries with the above ingredients and set aside. ∙ 1 beaten egg yolk ∙ granulated sugar for garnish ∙ Preheat oven to 375 degrees. Line a baking sheet with parchment paper. ∙ Roll out puff pastry to a 11" x 11" square. Transfer to prepared baking ∙ sheet. ∙ [...].