Baked Macaroni with Tuna - With pork

1 lb macaroni 1 1/2 lbs sweet Italian sausage, uncooked with casings removed 1 1/2 cups onions , caramelized 1 quart whole milk 6 tablespoons unsalted butter[...]

4 slices bacon 1 sweet onion , halved and thinly sliced 1 1/2 cups elbow macaroni 2 cups mozzarella cheese , shredded 4 ounces gruyere cheese , shredded 1 cup[...]

16 ounces one box elbow macaroni 1/2 cup butter 1/2 cup sifted flour 4 cups milk 2 -3 teaspoons hot sauce 16 ounces shredded sharp cheddar cheese 16 ounces[...]