Prepare 1 package vanilla pie filling as directed on package using 1 3/4 cup milk. Cover with waxed paper; chill. Fold in 1 1/2 cup miniature marshmallows and 1/2 cup heavy cream, whipped. Slice 2 bananas in a 9 inch baked pastry shell. Pour filling over bananas. Chill several hours. Garnish with banana slices and miniature marshmallows.