I went on Pinterest and, like, I totally don't have time to be baking a casserole after I already made the whole dish. So, here's a mac and cheese with chicken that I just did pot-style, and everyone seemed to love it.
Chicken breasts - diced
Summer squash - sliced
Dice all your chicken and vegetables, then put sautee the chicken in some olive oil until it's tan around the edges.
Boil your pasta water, and start making the pasta per box directions.
Put squash, onion and garlic in with the chicken until they're all soft.
Add some chicken broth and cook until it boils, then add the milk.
Drain pasta and add it to the mess.
Throw in all your cheeses until the liquid turns to a satisfactory this-is-the-consistency-of-mac-and-cheese consistency.
Serve it up.