Tuna salad is a cold one-dish dinner! Eating it right now
Noodles (shell noodles are my favorite although I am currently eating it with spaghetti noodles)
Peas
Canned Tuna
Cream of Mushroom soup (or you can alternate for a bit of whipping cream that you season, or mayo, if you’re in a pinch without the soup)
Boil and cook the noodles in a pot on the stove, if using frozen peas add them halfway through, then drain and remove from heat; drain the tuna juice and give it to your cat, shred the tuna into the pot with the noodles and add the cream of mushroom and fresh peas if using those. You can eat it now and put the rest in the fridge for later, it’s meant to be eaten cold. This is the base for the general taste - you may add other vegetables if desired.