Macaroni and cheese tuna dish

2 packages of Macaroni and cheese
1 can of tuna
milk
butter
1 cup of birdseye frozen peas

But macaroni in a pot and add the frozen peas. Cook till macaroni is done. Drain water from the macaroni. Add butter and milk according to the macaroni box. Add tuna and stir.
Salt to taste if you add salt.
Goes well served with cornbread.