Pumpkin Mallow Pie

1 pt. whipping cream
15 ounce can pumpkin
2 10 ounce packages mini marshmallows
1 teaspoon cinnamon
2 9" graham cracker pie crusts

Whip whipping cream until soft peaks form; set aside. Combine pumpkin, marshmallows and cinnamon in a heavy saucepan; stir over low heat until marshmallows are melted. Cover and chill thoroughly. Blend chilled mixture until fluffy; fold in whipped cream. Divide and spread evenly into pie crusts; chill until firm. Makes 16 servings.