I've got a good quick and easy tuna macaroni bake...

A can of tomato soup
Macaroni
1 onion
Grated cheese
Large can tuna

Qts - I make them up as I go... depends how much I make - which is heaps coz I love it being so easy. Can be frozen and reheated super easy too.

Put macaroni on to cook
Cook onion and tuna, mix in tom soup and cook.
Layer mac then sauce then mac then sauce etc - end with sauce and top with grated cheese and bake for about 20 mins. - I always layer with cheese as well, but I lurve cheese. Yummo... must be time I made this again.