Directions:
Preheat the oven to 200C.
In a bowl, mix the meat, finely chopped onion, an egg, mustard and breadcrumbs and shape this mixture into meatballs. Heat some oil and fry the meatballs until browned on each side. Transfer them to the oven and bake for 15'.
Meanwhile, make the sauce. Heat some oil, add the flour, cook it for a minute or so, then pour in the soup and milk and cook the sauce for 7-8'. A couple of minutes before the end add the cheese and cook until it's melted. Two minutes before the end add the spinach (chop it up if the leaves are too big). Remove from the heat and add the nutmeg, salt and pepper by taste.
Cook the pasta and drain it.
Mix the pasta with the sauce, arrange the meatballs and grate some lemon zest on top. Serve warm.
.%20Remove%20from%20the%20heat%20and%20add%20the%20nutmeg,%20salt%20and%20pepper%20by%20taste.%3C/p%3E%3Cp%3ECook%20the%20pasta%20and%20drain%20it.%3C/p%3E%3Cp%3EMix%20the%20pasta%20with%20the%20sauce,%20arrange%20the%20meatballs%20and%20grate%20some%20lemon%20zest%20on%20top.%20Serve%20warm.%3C/p%3E){kind=small}