I remembered seeing an idea for this on pinterest a long time ago and so tried this out the other day. I sprayed the tin. I had ricotta cheese, goat cheese, mozzarella, and feta, onions, tomatoes, peppers, avocado, mushrooms, eggplant, and artichoke hearts. In each muffic section I added various combinations of those ingredients. You could use anything you wanted including already cooked meat.
Then I added one beaten egg to each muffin section. I broke an egg into my small liquid measuring cup and beat it in there with a fork because then it was very easy and mess free to pour. I then added seasonings.
(Side Note: Look what happened when I tried to crack this egg! This has definitely never happened to me before!)
I baked for 10 minutes (until the tops start to turn a little brown).
Then I enjoyed the end results! These are also freezable if you wanted to make a bunch at once and have easy breakfasts!