To keep this true to that Depression-era, four-ingredient spirit, I stick to ground beef, onion, tomato sauce, and elbow macaroni as the core of the recipe. The salt, pepper, and water are just basic pantry helpers you can add or skip. If you want to stretch it a bit further or suit picky eaters, there are a few easy tweaks. For kids who don’t love onion texture, dice the onion very finely or even grate it so it melts into the sauce but still adds flavor. You can also swap the elbow macaroni for any small pasta you have on hand, like shells or rotini, though the cooking time may vary slightly—just check for tenderness. If you’re really watching the budget, use a bit less meat and add a little extra pasta and water to make more servings. For a slightly richer taste, brown the beef deeply so you get those browned bits on the bottom of the pan, then scrape them into the slow cooker. You can also stir in a small handful of shredded cheese on top of each bowl for those who want it, leaving the main pot nice and simple for everyone else. Leftovers thicken as they sit, so when reheating, add a splash of water and warm gently on the stove or in the microwave, stirring halfway through so it gets saucy and comforting all over again.