Brush melted butter into empty muffin cups. Divide chopped ham among them.
Add chopped spinach, red pepper, and green onion to the muffin cups.
Whisk together eggs, cream, sun-dried tomato, salt, and pepper.
Pour egg mixture over meat and vegetables in pan. Bake for 20 minutes.
Top with grated cheese. Return to oven for a minute or two until cheese is melted. Remove from oven, and let rest for 5 minutes before removing from pan.
Serve right away, or cool to refrigerate or freeze.