Preheat oven to 180 °C.
Soak bread in milk until soft and mash with a fork.
Mix bread and milk with eggs, tuna, onion, green pepper and salt.
Season with parsley, lemon juice, pepper and half the paprika.
Spoon into an oven dish and sprinkle with cheese and remaining paprika.
Bake for 30-40 minutes or until golden brown and cooked.
Serve immediately with a salad.
Substitute the bread with 1-1½ cups of cooked brown rice and use as above. Left-over rice works well.