1Heat broiler. Cook vegetables as directed on box; pour into medium bowl. Stir in mustard.
2Place toasted bread slices on ungreased cookie sheet. Layer turkey evenly on bread. Spoon vegetable mixture over turkey. Sprinkle each with 2 tablespoons cheese.
3Broil 4 to 6 inches from heat 1 to 2 minutes or until cheese is melted.