Spray your muffin tin or use cupcake holders.
Mix a dozen eggs in a bowl then add whatever greens, vegetables and spices everyone agrees they want in their eggs.
Place the cooked meat in the bottom muffin cups. At this point if someone wants a vegetable or meat different from others then put it directly in their muffin tin.
Pour the egg mixture till each muffin cup is 3/4 full.
Place grated cheese on the top.
After adding all ingredients be sure to somehow mark the top of the muffins (add a colorful spice or a piece of parsley etc.) to indicate any different ones. Wipe off any drips of egg mixture that fell between the cups. This will make clean up much easier!
Then bake for 20 minutes at 350.
Allow to cool for 5 minutes before eating.