Heat olive oil in a skillet. Add chopped onion and cook until translucent. Add minced garlic clove, bay leaf, ground beef, season with salt and pepper. Let cook for 10 minutes and then add chopped tomatoes and cook for 5 minutes more.
Transfer beef mixture into the baking dish and sprinkle with chopped bacon.
Drizzle hot sauce and mustard over beef layer, sprinkle with shredded cheddar and transfer to the oven for 10-12 minutes or until cheese melts.