Unexpected guests and nothing planned for dinner? Re-imagine that box of mac as a comforting tuna casserole with just a few staples you probably already have laying around. It’s as easy as this–prep your add-ins while June cooks the macaroni, stir in your add-ins with the cheese sauce, reheat, and voila! Serve it with a salad for an easy, light meal you’d be proud to present. The vinegar sours the milk ever so slightly for a subtly refined flavor that makes this dish sing, so don’t be surprised if your cheese sauce seems thick. Use any cracker crumbs you have, we like buttery Ritz crackers but saltines are a great alternative. This recipe is designed for the 7.25 ounce box with classic elbow or straight macaroni. If you have a smaller box, please follow the 6 ounce recipe.