1/2 pound fresh asparagus spears, trimmed
4 ounces (1 cup) sliced fresh mushrooms
1 medium (1/2 cup) onion, chopped
8 slices (2/3 cup) bacon, cooked, crumbled
1 small tomato, sliced
4 ounces (1 cup) shredded Cheddar cheese
Any combination of cooked broccoli, green bell pepper, red bell pepper, carrot, zucchini or summer squash can be substituted for tomato or asparagus.