Saute onion in Bacon Olive Oil over medium heat and add butter and add garlic. Cook until onion is limp.
Add spinach and seasonings. Cook briefly.
Put in food processor with steel blade (puree slightly) or mix by hand.
Add Ricotta, Parmesan and egg.
Combine again in processor or by hand.
Either spoon mixture into pasta shells or fill, using a pastry bag.