Use the ham slices to lay out 6 muffin molds - possibly made of silicone. Put a spoonful of sour cream in the hollow and pour 1 egg over each, lightly salt (the ham is already salty!), Sprinkle with pepper and oregano.
Drizzle each portion with a little olive oil and decoratively distribute the tomato cut into wedges on the portions. Bake in the oven at 180 ° C (fan oven) until the egg is firm and the ham is crispy.