Rustic Plum and Port Tart

Name: Rustic Plum and Port Tart
Prep time: 20 minutes
Total time: 1 minutes
Yield: 6 Servings
Ingredients: 2 cups tawny Port; 1/2 cup (packed) plus 1 tablespoon golden brown sugar; 1/4 teaspoon allspice; 1 1/2 pounds plums (5 to 6 medium), halved, pitted, each half quartered; 1 tablespoon all purpose flour; 1 refrigerated pie crust (half of 15-ounce package); Vanilla ice cream