Ravioli filled with Sweet Onions, smoked provola and ricotta cheese

Ingredients for 60/70 Ravioli

4 medium red sweet onions ( they must be caramelized in 5 tbs of oil, with salt and fresh parsley 150 gr (5 oz.) smoked provola cheese
750 gr (26 oz.) of ricotta cheese
50 gr (1.75 oz.) of parmesan cheese
1 egg
salt, nutmeg and fresh basil and parsley ( using your own taste to decide the right amount)
(put all these ingredients into a cutter or robot machine)