Use a shallow bowl to put your ingredients in so it all bakes through or if you do not have that put the bowl in hot water in the oven, so it heats evenly.
On the bottom of the bowl put your ingredients such as ham, tomatoes, peppers, feta or whatever you like or have leftover in the fridge. Crack two or more eggs in the bowl and do not stir. You want the yolks to remain whole. You can add cheese of your liking on top (grated, whole; it doesn't really matter) and put in the oven at 200C for about 20 minutes. The only thing to keep in mind is that your veggies need to be able to get done in those 20 minute as well. If they need longer prepare them first before adding to your bowl.