Heat the oil in a pot.
Cook the garlic, onion, bacon and carrot, stirring often, until carrot is just tender.
This should take about 8 minutes.
Add the minced beef and cook it until brown.
Add the soup (not diluted) and the ketchup, tomato paste and oregano.
Simmer for 15 minutes with a lid on, or until the mixture is a bit thicker.
Meanwhile cook the pasta, following the instructions on the package.
Drain the pasta, then stir it into the beef mixture.
Preheat the oven to 180 degrees C.
Transfer the pasta mixture into a greased ovenproof dish and sprinkle the cheese on top.
Bake for 15 minutes uncovered, or until the top is golden brown.