This is another favorite in my house. And I'm all about easy but tasty food!
1 can tuna (drained)
1 can cream of mushroom
1 package of mac and cheese (any kind- can even use the kind that has the cheese sauce)
frozen peas or corn
Prepare the mac and cheese according to package instructions. Add cream of mushroom and tuna. Mix together. Throw in onions and any other optional ingredients you want. Keep on low on burner until everything is heated through. If you want you can throw it in the oven for a thicker sauce and to melt shredded cheese if you added it.
That's it! It's super easy and tastes yummy! Everyone in my family likes it.