01 -
Turn your oven on and preheat it to 400°F (200°C).
02 -
Fill a big pot with 4 quarts of water, throw in a tablespoon of salt, and bring it to a boil. Toss in the noodles and cook them about 2 minutes less than the directions on the package. Then add the broccoli, letting it cook another couple of minutes with the noodles. Drain everything using a colander.
03 -
While your pasta's going, throw the mushrooms in a dry pan over medium-high heat (no oil needed). Let them release their juices and get lightly browned, about 5-10 minutes. Set them aside.
04 -
Heat up the butter in a large pan (oven-safe if possible) over medium heat. Stir in the onion and cook till it’s soft and clear, about 5 minutes.
05 -
Put the drained pasta and broccoli back into the pot. Gently stir in the cooked mushrooms, tuna, canned soup, shredded cheese, milk, cream, and a sprinkle of salt and pepper. Mix everything till it’s all combined well.
06 -
If your pan isn't safe for the oven, transfer the mix to a 9x13 inch casserole dish. Spread the crushed potato chips evenly on top.
07 -
Place the dish in your preheated oven and bake for 20 minutes or so. You’re looking for golden brown chips and bubbly edges on the casserole.