Spray 6 cavities of the muffin tin very well. Tuck one slice of prosciutto in the muffin pan. Top with one large egg.
Drizzle one teaspoon of heavy cream or melted butter over the uncooked egg, top with salt and pepper.
Bake for 10-18 minutes until the yolk reaches your desired texture. The lower the cooking time the runnier the egg will be.
If you want a slightly more crisp texture on top you can broil the egg for 30 seconds - 1 minute, watching closely until it reaches your desired texture.