Chop the chorizo into small chunks. Put in a frying pan over a high heat and cook until the oil has started to run out. Add the onion, and cook for 2 minutes, stirring often. Pour in the passata and smoked paprika; bring to the boil.
Pour the tomato mix into 2 small ovenproof dishes. Make a small well in the centre of each using a wooden spoon, and crack 2 eggs into the centre of each dish, being careful not to break the yolks. Grate a little cheese over the top of each, and put in the oven for 10-15 minutes depending on how well you like your eggs cooked. Enjoy!