Plug in your pressure cooker and put in 1 1/2 cup of water. (2 cups if you skip the wine)
Look at the mussels and make sure they are all closed. You do not want to eat anything that is already open prior to cooking. Also, clean off the shells.
Next, putĀ your steamerĀ in the pressure cooker (You can put the mussels in without it. I just think this contains the mess.)
Put the mussel on top of the steamer
Then dump the can of tomatoes
Add the garlic
Slice up the butter
Pour on the wine
Top with the scallions or the Italian Parsley
Then close the pressure cooker. Put it on for 8 minutes in the manual setting.
Once the pressure cooker is done cooking release the pressure using your mitts
Make sure the mussels are open before you serve them. If they didn't open and there are only a few then they are bad if most of them didn't open you need to put them back in the pressure cooker for longer.
I usually serve them over pasta. I make my pasta on the stove. You can use the juice under the steamer and pour it over the pasta or just serve them with marinara sauce.