Tuna-Mac Skillet is a comforting one-pan meal that combines pantry staples like macaroni and cheese mix, canned tuna, and mushrooms for a creamy and hearty dish. Popular for its ease and affordability, this recipe is perfect for weeknight dinners or nostalgic comfort food cravings. The inclusion of sour cream and peas adds richness and nutrition, while prepared mustard and parsley give it a subtle flavor lift. This dish embodies mid-century American convenience cooking, where creativity met practicality in the kitchen.