Spray the inside of muffin/cupcake tin with non stick spray or use muffin tins.
Add all ingredients, except ham and cheese, to a food processor or blender and mix until well incorporated.
Chop ham into small cubes, see notes for best practices.
Scoop even amount of the egg mixture into a 12 cavity cupcake/muffin tin. Add ham and cheese, to your liking.
Bake for 22-25 mins until the center is set.
Notes
To cut down on the prep time, you can slice ham for baked ham and then cube that up. I don't think that deli meat works well because it's too thin to really hold its own.You can change up the type of cheese that you want to use each time. If you put the cheese in the middle of the muffin, it melts perfectly and makes for simple clean-up.