4 slices whole-grain bread, lightly toasted
1 avocado, sliced
1 cup sliced mushrooms
1/3 cup sliced toasted almonds
1 tomato, sliced
4 slices Swiss cheese

Preheat the oven broiler.
Lay the toasted bread out on a baking sheet.
Top each slice of bread with 1/4 of the avocado, mushrooms, almonds, and tomato slices.
Top each with a slice of Swiss cheese.
Broil the open-face sandwiches until the cheese melts and begins to bubble.
Serve the sandwiches warm.