For that version of mussels, you just cook them with cream, spices, onions, and wine. This is a simple recipe but it will taste great and will be full of sea flavors.
Put the instant pot in mode browning
Fry the onion and shallot in a little butter
Pour in the white wine
Let reduce
Add the mussels and pour the cream over the mussels
Add the pepper and parsley
Stir
Switch to pressure cooking 3min
Servings 3