Sauté mushrooms in butter on med/high heat to brown slightly (don't crowd or mushrooms won't brown-do in 2 batches if necessary). Remove and sauté onions until translucent, about three to four minutes. Combine wine, Worcestershire sauce and tomato paste with herbs and seasonings. Lightly mix together all ingredients using your fingers or a wooden spoon.
Preheat oven to 350°. Spray a 9 x 13" baking dish, form the meat mixture into an oval shape and place into baking dish. Top with bacon, or traditionally coat with ketchup and top with green pepper slices, and bake for an hour.
Chef's Note: This will make terrific sandwiches too!
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