Start by cutting off the top of the onion and a sliver of the base of the onion (where you can see the root). Peel off the papery layer plus one more layer of the onion. Repeat on remaining onions.
Cut 4 slits on the top of the onion about 1/2 inch down. Repeat on remaining onions.
Place the onions in a small baking dish. An 8x8 pan or even a pie pan will work.
Pour over the butter evenly over the onions. Drizzle over one tablespoon of Worcestershire sauce over each onion.
Spread one teaspoon of cream cheese over each onion with a small knife.
Sprinkle each onion evenly with the salt, pepper, garlic powder and thyme.
Place baking dish in the center of the onion and bake for 35-45 minutes or until onions are heated through.
Serve an entire onion for each person or cut in half. Drizzle with sauce that is on the bottom of the baking dish.