This southern-style 3-ingredient baked mac and cheese is the kind of shortcut my own mother leaned on for Sunday dinners when there was a roast in the oven, kids underfoot, and not much time for fussing with a béchamel. It leans into a very simple formula that’s long been popular in Southern kitchens: hot cooked macaroni, plenty of sharp cheddar, and good whole milk. The magic is in the high heat, which bakes everything into a creamy center with those coveted crispy, browned corners that everyone fights over. It’s the sort of dish you make when you want real comfort with minimal effort and ingredients you probably already have on hand.
Serve this baked mac and cheese straight from the glass casserole dish while it’s still bubbling and golden. It’s perfect alongside classic Sunday mains like roast chicken, pork chops, or meatloaf, and it plays nicely with green beans, collard greens, or a simple vinaigrette-dressed salad to cut through the richness. For a true Midwestern-Southern mashup, pair it with sliced ham, pickles, and a pan of cornbread, and offer hot sauce on the table for anyone who likes a little kick with their cheesy noodles.
Southern 3-Ingredient Baked Mac and CheeseServings: 6
Ingredients
12 ounces elbow macaroni, uncooked
4 cups shredded sharp cheddar cheese, divided
3 cups whole milk
Directions
Preheat your oven to 375°F (190°C). Lightly butter or spray a 9x13-inch glass casserole dish so the edges crisp but don’t stick.
Bring a large pot of well-salted water to a boil. Add the elbow macaroni and cook until just shy of al dente, 1–2 minutes less than the package directions. The pasta will finish cooking in the oven, which helps keep the texture pleasantly firm instead of mushy.
Drain the macaroni thoroughly, shaking off as much water as possible so it doesn’t dilute the milk and cheese. Return the hot pasta to the warm pot.
Stir 3 cups of the shredded sharp cheddar into the hot macaroni, tossing until the cheese is mostly melted and clinging to the noodles. It will look thick and sticky rather than saucy at this point—that’s exactly what you want.
Pour in the whole milk and stir until the pasta is evenly coated and the cheese mixture loosens into a loose, creamy base. It should look slightly soupy; the pasta will drink up some of the liquid as it bakes and sets.
Transfer the macaroni and cheese mixture to the prepared glass casserole dish, spreading it into an even layer and making sure some noodles touch the sides and corners—those exposed bits are what become the crispy, browned edges everyone loves.
Sprinkle the remaining 1 cup of shredded cheddar evenly over the top, going all the way to the edges so you get a bubbling, golden crust across the surface.
Bake, uncovered, on the middle rack for 30–35 minutes, or until the top is deeply golden, the edges are browned and crisp, and the casserole is bubbling around the sides. If your oven runs cool and the top isn’t browning, leave it in for an extra 5–10 minutes, keeping an eye on it.
Let the baked mac and cheese rest for at least 10 minutes before serving. This short rest allows the cheesy sauce to thicken slightly so you get creamy slices with defined, crispy corners instead of a runny casserole.
Variations & Tips
Because this recipe is intentionally built on only three ingredients, all variations should respect that simplicity and can be treated as optional tweaks rather than requirements. For a slightly richer texture while still using just three ingredients, you can swap part of the whole milk for evaporated milk (for example, 2 cups whole milk and 1 cup evaporated milk) and keep the total liquid amount the same. If you prefer a stronger cheese flavor, use extra-sharp cheddar or a mix of yellow and white sharp cheddar within the same total amount; the sharper the cheese, the more pronounced the tang. For a looser, more custardy mac and cheese, increase the milk by up to 1/2 cup and bake until just set in the center. If you like extra-crispy corners, use a slightly larger glass baking dish so more pasta is exposed to the sides, and let it bake a few minutes longer, watching closely so the cheese doesn’t burn. Food safety tips: Always cook the macaroni in fresh, clean water and drain it well. Use pasteurized dairy products and keep shredded cheese refrigerated until you’re ready to mix it in. Don’t leave the baked mac and cheese at room temperature for more than 2 hours; refrigerate leftovers promptly in shallow containers and reheat thoroughly until steaming hot before serving again.
