This southern 3-ingredient baked mac and cheese is the kind of dish that makes people stop mid-bite and ask, “Okay, what did you put in this?” It’s inspired by the no-fuss casseroles I grew up seeing at church potlucks—creamy, cheesy, and comforting, without a long grocery list. Everything happens in one casserole dish, and the magic comes from letting simple ingredients bake low and slow until the edges are golden and the middle is bubbling. It’s the perfect thing to slide into the oven on a Sunday afternoon or on a busy weeknight when you still want something that feels special.
Serve this baked mac and cheese as the cozy centerpiece alongside simple sides like green beans, a crisp salad, or roasted broccoli. It’s also wonderful next to baked or fried chicken, meatloaf, or ham for a Sunday-style dinner. For potlucks or game days, I like to set it out with a big bowl of fruit salad and some warm rolls so everyone can build a plate that feels hearty but still balanced.
Southern 3-Ingredient Baked Mac and CheeseServings: 6-8
Ingredients
16 oz (1 pound) uncooked elbow macaroni
6 cups whole milk
6 cups shredded sharp cheddar cheese, divided (about 1 1/2 pounds)
Directions
Preheat your oven to 350°F (175°C). Lightly grease a 9x13-inch glass casserole dish with a bit of butter or oil if you’d like, just to help with cleanup (optional).
Pour the uncooked elbow macaroni evenly into the bottom of the glass casserole dish. Spread it into an even layer so it cooks uniformly.
Sprinkle 4 cups of the shredded sharp cheddar cheese over the dry macaroni, reserving the remaining 2 cups of cheese for the top crust.
Slowly pour the whole milk over the macaroni and cheese in the dish, making sure all the pasta is moistened. Gently press down with a spoon to help the milk seep through and around the noodles and cheese.
Give everything a very gentle stir in the dish—just enough to loosely combine the milk, pasta, and cheese while keeping the pasta mostly in an even layer. Smooth the top a bit with the back of a spoon.
Cover the casserole dish tightly with foil. Bake, covered, for 45 minutes, until the macaroni is mostly tender and the mixture is hot and bubbling around the edges.
Carefully remove the foil, stir the macaroni gently from the bottom to redistribute the melted cheese and milk, and smooth it out again into an even layer.
Sprinkle the remaining 2 cups of shredded cheddar cheese evenly over the top of the macaroni to form a thick cheese layer that will bake into a golden crust.
Return the dish to the oven, uncovered, and bake for another 20–25 minutes, or until the cheese on top is melted, bubbling, and deep golden in spots, with a slightly crispy edge.
For an extra-crispy top, you can switch the oven to broil for 1–3 minutes at the very end. Watch closely so it doesn’t burn—pull it as soon as the top is richly browned.
Remove the casserole from the oven and let it rest for at least 10 minutes. This helps the cheesy sauce thicken up and makes it easier to scoop clean squares with that beautiful, bubbly, golden crust on top.
Serve warm, scooping down through the crispy top to get to the gooey, cheesy macaroni underneath.
Variations & Tips
If you have picky eaters who like things extra saucy, stir in an additional 1/2 to 1 cup of milk when you uncover the dish at the 45-minute mark, then continue baking as directed. For a milder flavor for kids, you can use half mild cheddar and half sharp cheddar (still keeping the total cheese amount the same). If your family prefers very soft, almost overcooked pasta (like many church potluck versions), add 5–10 minutes to the covered baking time before you stir and top with the remaining cheese. To make ahead, assemble the dish up through pouring in the milk, cover tightly, and refrigerate up to 8 hours; when baking from cold, add about 10 extra minutes to the covered bake time. If you want individual portions for little hands, bake the mixture in greased muffin tins (fill each cup about 3/4 full, bake covered with foil on a sheet pan for 20 minutes, then uncover, top with cheese, and bake until golden). For a slightly richer flavor while still keeping the three-ingredient spirit, you can swap 1 cup of the milk for half-and-half or heavy cream if you already have it on hand.
