Preheat oven to 375°F. Line baking sheet with aluminum foil. Spray with cooking spray; set aside. Combine maple syrup and mustard in small bowl; set aside.
Combine beef, pork, onion, mushrooms, flour, eggs, tomato paste, tomato sauce, salt and pepper in large bowl until blended. With hands, form mini meatloaves (about 2 inches wide) and place on baking sheet.
Wrap bacon around each meatloaf, tucking ends under sides. Brush bacon with syrup mixture.
Bake 30 minutes. Turn on broiler and cook another 5 to 10 minutes to crisp bacon.