Roasted Black Plum and Mascarpone Pie

Ingredients (9)

• 1 pie crust homemade or store bought
• 4 lb. firm ripe black plums quartered
• 2 cups sugar
• 2 tablespoons lemon juice
• 1 vanilla bean divided
• 1 cup mascarpone
• ⅓ cup creme fraiche or light sour cream
• 2-4 tablespoons honey to taste
• Whipped cream to serve