and stir the meat and onion in a large skillet until the meat is brown. Drain off the excess fat. Stir in the salt, pepper, 2 Tb of the baking mix, and the worcestershire sauce. Turn the meat filling into the pastry lined pie pan. Arrange the tomato slices on the meat mixture. Beat the eggs slightly and stir in the cheese. Spoon onto the tomatoes spreading the mixture to cover the top completely. Bake for about 30 minutes. Cut into wedges and serve with chili sauce, if desired.