1 cup milk\r\n1 cup macaroni\r\n1 can tuna\r\n1 can mushroom soup\r\n1 onion, chopped\r\n1 cup peas\r\n\r\nMix all of the ingredients together and cover with grated cheese. Bake for 1 hour at 350 degrees.

Great recipe. I made it last night and I also tried sprinkling a little paprika over the top of the cheese just for some color.

Does the macaroni need to be cooked first?

You don't have to cook the macaroni first. One hour in the oven does the job.