Preheat the oven to 200°C.
Chop the onion, slice the peppers into strips, cut the tomatoes roughly into chunks.
Cut the sausage into small cubes then fry them in a pan until the fat is released. Transfer them into a little bowl.
In the fat, soften the onions then add the garlic and pepper strips. Sauté for 5 minutes, then add the tomato pieces and stir for another 5 minutes.
When the tomatoes are soft and juicy, put the sausage pieces back. Combine.
Spoon the mixture into 4 small oven-proof dishes. Form a well in the middle of each and crack an egg into each of them. Crumble a little butter or drizzle a little more oil on top and put the dishes into the oven. Bake for 5-10 minutes, depending on how well cooked you like egg yolk.