With adult supervision…
1. Melt butter in a frying pan over medium heat.
2. Break egg into frying pan. With a spatula, break the yolk and mix a bit with the white.
3. When egg is cooked, using the spatula, turn it over and briefly cook the other side.
4. Place cooked egg on a toasted muffin half. Top with cheese and ham (or turkey). Cover with the other toasted muffin half.
Fry bacon (be sure to drain all the bacon fat and then use a paper towel to soak up as much of the fat as possible) and add it to your muffin instead of the ham or turkey.