Why does my cheese sauce always turn out grainy?

Two likely culprits: pre-shredded cheese (the anti-caking coating doesn't melt clean) or adding cheese while the sauce is still boiling. Grate from a block, and always pull off the heat first.

Can I make the sauce ahead of time?

Yes — the béchamel (before the cheese goes in) keeps well in the fridge for a couple of days. Reheat gently, add your grated cheese off the heat, then combine with freshly cooked pasta.

What's the best pasta shape for mac and cheese?

Anything with texture — elbows, cavatappi, shells, or medium shells. They grab and hold the sauce better than smooth shapes. Avoid long pasta; it doesn't work well here.

How do I reheat leftovers without it getting gluey?

Low heat with a splash of cold milk, added slowly and stirred in as it warms. Microwaving on high makes it rubbery. If the sauce looks broken, a little cold milk and gentle heat usually brings it back.

Can I make this gluten-free?

Yes. Use a 1:1 GF flour blend for the roux and your preferred GF pasta. The technique is exactly the same.

Mac and Cheese 101: How to Make a Really Good One From Scratch

Mac and Cheese — The Basic Recipe

Recipe by Jenn Giam Smith

Total Time30 minutes
Yield6 servings 1x

A simple, classic from-scratch mac and cheese. Master this and you can make any version.

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Ingredients

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2 tbsp unsalted butter
2 tbsp all-purpose flour
1 cup whole milk, cold
1/2 cup heavy cream
8 oz cheese of choice, grated
1 tsp kosher salt, plus more to taste
1/2 tsp black pepper
1 pinch freshly grated nutmeg (optional)
1 lb elbow macaroni or pasta of choice
1/2 cup reserved pasta water

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Instructions

Melt butter in a medium saucepan over medium heat. Whisk in flour and cook, stirring constantly, for 2 minutes until pale and slightly nutty-smelling.
Gradually whisk in cold milk, a little at a time, whisking constantly between additions — this is what keeps the sauce smooth and thick. Bring to a gentle boil, whisking frequently, until the sauce thickens — about 2 to 3 minutes.
Meanwhile, cook pasta in heavily salted boiling water until al dente (2–3 minutes less than the package says). Reserve ½ cup pasta water before draining.
Remove saucepan from heat. Add grated cheddar in two additions, stirring well after each until fully melted and smooth.
Season with salt, pepper, and nutmeg. Stir in reserved pasta water, then add drained pasta. Toss to coat. Serve immediately.

Equipment

All-Clad D3 3-Ply Stainless Steel 3 Quart Sauce Pan

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Sur La Table 5-In-1 Grate & Slice Set

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Notes

Always grate from a block. Pre-shredded cheese contains anti-caking agents that make sauce grainy.
Off the heat for the cheese. Every time — this prevents the sauce from breaking.
Storage: Refrigerate up to 4 days. Reheat over low heat with a splash of milk.
GF version: Use 1:1 GF flour and GF pasta. Same technique.

Suggested Add-Ins

Proteins: Crispy bacon, shredded rotisserie chicken + hot sauce, smoked sausage, cooked lobster or crab
Vegetables: Roasted broccoli or cauliflower, peas (stirred in at the end), wilted spinach, caramelized onions
Seasonings: Hot sauce, Dijon mustard (1 tsp), Old Bay, pesto
Toppings: Crushed Ritz crackers or Goldfish, fried onions, buttered panko broiled until golden

Cheese Upgrade

For a richer version, swap in this blend (same total amount):

8 oz sharp cheddar, grated
6 oz Gruyère, grated
2 oz cream cheese, softened

Prep Time: 10 minutes
Cook Time: 20 minutes
Category: Dinner, Lunch, pasta
Method: stovetop
Cuisine: American

Find it online: https://www.jenn-smith.com/mac-and-cheese-101/