Carefully remove stem, with about an inch of surrounding pepper, from each pepper.
Chop pepper from around stems to equal 2 tablespoons; set aside.
Keeping peppers whole, remove and discard ribs and seeds. Stand each pepper upright
in a microwave-safe muffin pan cup; set aside.
In medium glass bowl, microwave butter on HIGH for 30 seconds.
Add reserved chopped pepper, onion and ham; microwave on HIGH for 3 minutes or until onion is tender,
stirring after 1 1/2 minutes.
Stir in flour, oregano and pepper until smooth. Gradually stir in half-and-half;
beat in eggs and stir in 1/3 cup feta cheese. Spoon into the pepper cups, dividing
evenly; microwave on HIGH for 4 minutes.
Sprinkle with remaining feta cheese.
Microwave on MEDIUM 10 to 12 minutes, or until just set, rotating muffin pan a quarter turn
every 3 minutes.