Grease a 10-inch pie plate. Cook and stir ground beef, onion, garlic and Worcestershire sauce and garlic in a large skillet until it is scrambled and browned- drain any grease. Stir in chili powder, oregano, salt, pepper and 1/2 cup of the taco sauce. Sprinkle crushed Doritos evenly in plate. Top with 1 1/2 cups of the cheese; spread with beef mixture. Beat milk, eggs and baking mix until smooth, 15 seconds in blender on high; or 1 minute with hand mixer. Pour over meat mixture. Bake in 400^ oven until knife inserted in center comes out clean, 25-30 minutes. Spread remaining taco sauce over top; sprinkle with remaining cheese. Bake 3-5 minutes more to melt cheese. Cool 10 minutes. Serve with chopped tomato, shredded lettuce and dairy sour cream.