Pre-heat oven to 350F.
Heat an oiled pan.
Add ground beef and brown.
Add onion, orzo, oregano, thyme, broth, pine nuts, raisins, and salt and pepper to preference.
Cover and simmer for 20 minutes, or until broth is absorbed, orzo is soft, and meat is cooked.
While simmering, coat inside of each pepper with olive oil and sprinkle of salt and pepper.
Place in oven, tops facing up, and bake for 15mins, or until desired texture is reached (softer peppers will require more time).
Remove from oven.
Stuff each pepper with meat mixture.
Top with feta and serve!