My coworker shared this secret for game day snacking. Just 3 ingredients. A gooey, savory mouthful that tastes better than takeout.

If you’d like a little extra flavor without adding more ingredients, choose a marinara or pizza sauce that’s labeled spicy or garlic-heavy, or pick Italian-style seasoned meatballs. To stretch the dish for a bigger crowd, use a larger casserole and add another half bag of meatballs and a bit more cheese, keeping the same simple 3-ingredient formula. For individual portions, divide the meatballs, sauce, and cheese into small ramekins and bake them on a sheet tray for personal mini bakes. If you prefer turkey or chicken, swap in frozen fully cooked poultry meatballs, but keep an eye on them so they don’t dry out—pull the dish from the oven as soon as the cheese is bubbling and lightly browned. You can also play with texture by baking a few minutes longer for extra-crispy cheese around the edges, which is especially nice if you’re skipping bread. Leftovers reheat well in a low oven or microwave; just cover loosely so the cheese doesn’t toughen.