Dragonfly's Welsh Rarebit

This recipe is meant to be flexible and a way to use up things you might have on hand. This can be as simple as sauteed onions under the cheese. The bread can be past its prime for eating untoasted and the veggies can just be leftovers.
Toast your bread, lay on a plate. Heat up the veggies or stirfry if using fresh. Top with hot cheese sauce.
Personal favorite rarebit combo: Onions, mushrooms, zucchini, red bell pepper and well steamed broccoli, sauteed, stacked on toast and uncheesily smothered.