Breakfast Sandwich

When my daughter was in school, her bus would occasionally come before the scheduled time, usually just as she was sitting down to breakfast. This sandwich was something she could wrap quickly and eat on the bus. Erica still loves them. These work well made the night before and reheated in the microwave for a hot, hearty breakfast in a hurry.

For each sandwich:
1 large biscuit, hamburger bun, english muffin or other roll of your choice.
1 egg
1 slice cheese (american works best I think but use whatever you like)
2 slices cooked ham sandwich meat, or 1 burger sized cooked sausage patty, or 2 rounds canadian bacon , Or 3 strips crisp cooked bacon .
About 2 tablespoons butter
Salt and pepper to taste