IMO there's no easier one dish recipe than pasta and cheese dishes. This is my favorite . . . I make it when the last thing in the world I want to do is cook.
2 cups elbow macaroni
3 Tbsp butter or margarine
1 green bell pepper, chopped
1 celery stalk, thinly sliced
3 Tbsp flour
3/4 tsp salt
1/8 tsp pepper
2 cups milk
1 can of chicken
1 cup cheddar cheese
Prepare macaroni as label directs; drain.
Meanwhile, in 3 qt saucepan over medium heat, melt butter; add pepper and celery and cook until tender. Stir in flour, salt, and pepper. Gradually stir in milk and cook, stirring constantly, until sauce is slightly thickened. Stir in chicken and cheese. Remove from heat when cheese is melted, and stir in the macaroni.
I hate doing more dishes than is absolutely necessary, so I just cook the macaroni first, drain it, and set it aside in the colander so I can use the same pot for cooking the veggies and sauce before dumping it all back together again. I also love greens, so the measly little amount of pepper and celery the recipe calls for is totally ignored as I throw in two or three bell peppers and several stalks of celery.
Here's another dish I make on those "I donwanna cook!" days. You can cook up the chicken for it, but I only make it when I have leftover chicken to stick in already.
Spaghetti
1 block Velveeta
1 can Rotel
1 can cream of mushroom soup
Leftover/cooked chicken
Prepare spaghetti as label directs; drain.
Mix all ingredients together.
I like things hot so I thought I'd like Hot Rotel and Hot Velveeta, but I found the two mixed together are just too hot for me, so I usually use one Hot and one Original, doesn't matter which is which. When I cook it for my step-dad I chop jalapeno peppers into it for him. Depending on how much spaghetti you decide to use and how big a household you live in, it could be in your fridge for over a week . . . very budget friendly meal.
Oh, and ETA, thanks for posting that page you found!