Preheat the oven to 210 degrees Celsius (410 degrees Fahrenheit).
Fry the bacon in a pan until they are almost crispy. Then add the onions and garlic and sauté over medium heat until the onions are translucent. Season with salt, pepper, and thyme.
150 g bacon, 2 onions, 3 cloves garlic, 1 tbsp dried thyme, 1 tsp salt, Pepper
Pour in the chopped tomatoes, heavy cream, and stock into the pan, and bring the sauce to a boil.
4 dl chopped canned tomatoes, 2.5 dl heavy cream, 5 dl pork stock
Slice the sausages into approximately 1 cm thick slices.
500 g sausages
Now, in an ovenproof dish, spread out the uncooked pasta, diced bell peppers, and sausage slices. Pour the sauce from the pan over the ingredients. Mix it around a bit to ensure even distribution, and make sure the pasta is covered with the liquid.
1 red bell pepper, 300 g penne pasta
Cover the dish with aluminum foil and place it in the oven for 35-40 minutes or until the pasta is cooked.
Remove the foil from the dish, sprinkle with grated Parmesan or Grana Padano cheese, and return the dish to the oven for 10 minutes or until the cheese is melted.
50 g parmesan
Take the dish out, optionally garnish with a bit of thyme, and serve with vegetables, a salad, or bread on the side.