Cheese Stacked Hero

1/4 cup mayonnaise
1 tablespoon prepared mustard
8 slices whole grain bread
4 leaf lettuce leaves
12 (1-ounce) slices deli ham
14 (1/2-ounce) slices Deli White American Cheese
2 red onion slices, separated into rings
2 tomatoes, sliced

Combine mayonnaise and mustard in small bowl; mix well. Cut 6 slices cheese in half diagonally.

To assemble each sandwich, spread 1 slice bread with 1 tablespoon mayonnaise mixture. Layer 1 slice bread with 1 lettuce leaf, 3 slices ham, 3 half slices cheese, 1/4 onion rings, 1/4 tomato slices and 2 whole slices cheese; top with 1 slice bread. Makes 4 sandwiches