Directions

1. Preheat oven to 190 C (375 F).
2. Heat olive oil in an oven-safe skillet. Add onions and sausages and fry until cooked.
3. In a large bowl, whisk eggs and cream, salt and pepper, then add mixture to sausages. Leave eggs to settle over medium heat as for an omelet.
4. As eggs begin to firm, add tomatoes and chopped parsley. 
5. Transfer to oven and bake for 15 minutes. 
6. At the10 minute mark, sprinkle cheese on top of frittata. Return to oven to melt cheese. 
7. Serve from the skillet.