Bacon Cheeseburger Mac & Cheese

Name: Bacon Cheeseburger Mac & Cheese
Prep time: 20 min
Cook time: 30 min
Yield: 12
Cuisine: Canadian,
Ingredients: 8 slices bacon; 1 pound (500 g) lean gorund beef; 1/2 cup (125 ml) chopped yellow onion; 1/4 cup (60 ml) frenchs tomato ketchup (frenchs/pr); 2 tbsps (30 ml) frenchs classic yellow mustard (frenchs/pr); 1 tsp (5 ml) salt divided; 1/4 tsp (1 ml) Pepper Black Ground (club house); 4 cups (1 liter) milk; 1/2 package (about 8 ounces/250g) elbow macaroni; 8 slices (250 g) American cheese; 3 cups (750 ml) shredded Cheddar cheese divided