Baked Macaroni and Cheese (Southern Style)

Southern-style baked macaroni and cheese sits firmly in casserole territory: tender pasta folded through a thick, milk-based cheese sauce, then baked until the edges bubble and the top turns golden. The roux gives the sauce body, while cheddar brings sharp savoury depth and mozzarella adds a softer, stretchy creaminess. A little ground mustard lifts the richness without making the dish taste mustardy. Resting after baking is important, as it helps the creamy centre settle so the macaroni can be served in neat, generous portions. It works as a comforting vegetarian dinner, a hearty side dish, or part of a larger Southern-inspired spread.
Cuisine style Southern American comfort food
Cooking style Make-ahead friendly • Freezer-friendly • Crowd-friendly

Why this recipe works

  • Creamy, set centre: A roux-based milk sauce coats the pasta evenly and helps the bake hold together after resting.
  • Balanced cheese flavour: Cheddar gives the sauce savoury sharpness, while mozzarella adds mild richness and a stretchy texture.
  • Baked comfort-food finish: The oven creates bubbling edges and a browned cheese topping while keeping the interior soft and creamy.

Get the most out of this recipe

Texture tips

  • For a creamier bake: Take the sauce off the heat before stirring in the cheese so it melts gently rather than tightening or turning grainy.
  • For cleaner slices: Let the macaroni and cheese rest before serving; the sauce sets slightly and the portions hold their shape better.
  • Protect the pasta texture: Cook the macaroni just shy of al dente so it stays tender after absorbing sauce in the oven.

Ingredient notes

  • Grate the cheese fresh: Freshly grated cheese melts more smoothly than pre-grated cheese, which can contain anti-caking agents.
  • Use whole milk for body: Whole milk gives the sauce enough richness and structure for a creamy baked finish.
  • Ground mustard adds depth: A little ground mustard sharpens the cheese flavour without making the dish taste overtly mustardy.

Make-ahead tips

  • Prepare ahead: Assemble the macaroni and cheese in the baking dish, cover and refrigerate, then bake when needed.
  • Reheat gently: Reheat portions in a 180°C (355°F) oven until piping hot, adding a little whole milk if the pasta seems dry.
  • Freeze leftovers: Cool completely, freeze in airtight portions, then defrost overnight in the fridge before reheating.

Common mistakes

  • Boiling the sauce too hard: Keep the milk sauce at a gentle simmer; high heat can make it thicken unevenly and catch on the pan.
  • Adding milk too quickly: Whisk the milk in gradually so the roux loosens smoothly and the sauce stays lump-free.
  • Skipping the rest: Serving straight from the oven gives a looser result; a short rest helps the bake settle.

Equipment you'll need

Ingredients
Instructions
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  1. Heat the oven to 190°C (375°F). Bring a large pot of water to the boil and season it with 2 tsp of the fine sea salt.
  2. Cook the macaroni until just shy of al dente, about 1 minute less than the packet suggests. Drain well in a colander and set aside.
  3. In a saucepan over medium heat, melt the butter. Whisk in the plain flour and cook for 1 to 2 minutes until it smells lightly biscuity, without letting it brown.
  4. Gradually whisk in the whole milk until smooth, then bring to a gentle simmer. Cook, whisking often, for 5 to 7 minutes until thick enough to coat the back of a spoon.
  5. Take the pan off the heat and whisk in the ground mustard, black pepper and remaining 1 tsp fine sea salt. Stir in most of the cheddar cheese and most of the mozzarella, reserving a small handful of each for the top, until melted and smooth.
  6. Add the drained macaroni to the cheese sauce and fold until every piece is coated. Spoon into a baking dish and scatter over the reserved cheddar cheese and mozzarella.
  7. Bake for 20 to 25 minutes until bubbling at the edges and browned on top. Rest for 10 minutes before serving so it sets and slices neatly.

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Recipe notes

Tips

  • Grate the cheddar cheese and mozzarella yourself for the smoothest sauce, as pre-grated cheese can make the sauce slightly grainy.
  • Keep the sauce at a gentle simmer and whisk often; a hard boil can make it thicken unevenly and catch on the base of the pan.

Substitutions

  • Replace mozzarella with extra cheddar cheese for a sharper, more traditional finish.
  • Replace ground mustard with 0.5 tsp black pepper for a simpler, pepper-forward flavour.

Storage

  • Refrigerate up to 3 days
  • Cool completely, then cover and refrigerate for up to 3 days. Reheat portions in a 180°C (355°F) oven until piping hot, adding a splash of whole milk if it seems dry; freeze in airtight portions for up to 2 months and defrost overnight in the fridge before reheating.

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Recipe overview

  • Servings: 4 servings
  • Total time: 1h 15min (25min active)
  • Difficulty: Medium
  • Cuisine: American
  • Allergens:
    Gluten Milk Wheat
Freezer friendly Kid friendly

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