1 (16 ounce) package pasta of choice
1 tablespoon vegetable oil
1 onion, chopped
1 cup chopped bacon, or Canadian bacon, or ham
salt and pepper to taste
1 (10.75 ounce) can condensed tomato soup
2 cups shredded Cheddar cheese, divided
1/2 cup milk
Lightly salt a larg pot of water and bring to the boil. Add rotini pasta and cook for 8 to 10 minutes or until al dente; drain.
In a large saucepan, heat the oil and add onion, bacon, salt, and pepper. Cook until bacon is crispy and onion is soft. Drain fat.
Pour in tomato soup and stir; bring to boil. Reduce heat to low; add 1 cup Cheddar cheese and the milk. Stir until cheese is melted.
Set oven rack about 6 inches from the heat source and preheat the oven’s broiler.
Combine sauce with pasta in a baking dish. Sprinkle with remaining 1 cup cheese. Place under the oven broiler until sauce is thick and cheese browned, 3 to 5 minutes.