Raspberry Sauce

Place 1-1/2 cups fresh raspberries or thawed frozen raspberries in a blender container or food processor bowl. Cover and blend or process until berries are smooth. Press berries through a fine-mesh sieve; discard seeds. Repeat with another 1-1/2 cups raspberries. (You should have 1 cup of sieved berries.) In a medium saucepan, stir together 1/3 cup sugar and 1 teaspoon cornstarch. Add sieved berries. Cook and stir over medium heat until thickened and bubbly. Cook and stir for 2 minutes more. Remove from heat. Cool slightly. Makes about 1 cup sauce.