I serve this with warmed crunchy bread on the side to scoop into the creamy baked eggs. You can also use pancetta instead of ham, but fry it off beforehand. One of my other variations is a tomato-based sauce spiced with harissa, with a crumble of feta and some chopped olives. Smoked salmon with spinach, cream and a sprinkle of lemon zest is also delicious.