Preheat oven to 350 degrees. Lightly grease a 13 x 9 casserole dish. Remove seeds from chilies. Lay chilies from two cans flat on the bottom of casserole. In a skillet, cook pork, beef, onion and garlic until meat is well browned. Drain grease. Spoon meat mixture over chilies in casserole dish. Add Cheddar cheese in an even layer. Place remaining chilies evenly over cheese. Whisk together eggs, flour, milk, and Tabasco. Pour misture over the second layer of chilies. Sprinkle Monterey Jack cheese on top. Cover and bake for 25 minutes. Remove cover, and continue baking for an additional 15 minutes or until lightly browned.