- Fresh lemon juice
- 2 Granny Smith apples, cored, and thinly sliced
- 2 loaves unsliced French bread, halved lengthwise and toasted
- 6 to 8 slices cheddar cheese
- 1 bunch watercress
- 1 recipe Tarragon Mayonnaise
- Sprinkle a little lemon juice over the apple slices and toss them together. (The lemon juice will keep the apples from oxidizing and turning brown.)
- Preheat the broiler. On the bottom half of each toasted bread loaf, pile on the sliced apples. Top with cheese. Broil until the cheese melts. Remove from broiler and top with watercress.
- Spread some of the Tarragon Mayonnaise on the top half of each toasted bread loaf. Place on the sandwich, mayonnaise side down. To serve, cut each sandwich into 3 pieces.