I have a decent recipe that you have to cook so not necessarily the easiest.
about 1 cupRaw fresh veggies in small pieces (carrots, peppers, onions, broccoli,
cauliflower...whatever you have on hand)
1 T. Olive Oil
1 t. Balsamic Vinegar
1 can tuna-drained
2-3 Egg whites
spices (oregano, parsley flakes, onion/garlic powder, dill, thyme-again whatever you have)
Mix everything in a bowl until coagulated...you may need another egg white or less veggies. Then I preheat a medium skillet on med-high, spray with Pam and mash it out on the skillet. Cover it for 3-4 minutes then uncover and fry on each side. You can't really taste the veggies-which I think is a good thing-and the tuna taste is not prevalent.
Some easier additions I make: pickles or pepperconies.
Salt and pepper, a little balsamic vinegar.