Ingredients
Method
- Cook pasta in salted boiling water until al dente, about 7 minutes. Drain and set aside.
- In the same pot, melt butter over medium heat. Whisk in flour and cook 1 minute.
- Gradually whisk in milk until smooth. Simmer, whisking often, until thickened, 5 to 7 minutes.
- Turn off heat. Fold in cheese a handful at a time, then stir in salt, mustard powder, and pepper.
- Add pasta to the sauce and toss until evenly coated. Serve immediately.
Notes
For the best texture, grate the cheese yourself. The sauce thickens as it sits; if reheating, stir in a splash of warm milk to loosen it back up.
