01 -
Fill a large pot with salty water, bring it to a boil, and cook your pasta until it’s firm but done (follow the directions on the box). Drain it well, then set aside so it doesn’t get mushy.
02 -
In the same pot (or a separate one), melt 2 tablespoons of butter over medium heat. Once it’s completely dissolved, sprinkle the flour over it and whisk constantly for about a minute. You’re aiming for a thick, smooth mix with no lumps.
03 -
Slowly pour in the cream while whisking to keep it lump-free. Add pieces of the Boursin cheese and the cheddar. Keep stirring until the cheese is fully melted and the sauce is creamy and silky.
04 -
If your sauce feels too thick (it’ll firm up a bit once mixed with the pasta), stir in a little milk gradually until it’s just right. I usually add about 1/2 cup. Add more salt to taste, but keep it light.
05 -
Stir the cooked pasta into the cheese sauce gently until every piece is nicely coated. If you’re making the topping, melt 2 tablespoons of butter in a small pan, toss in the breadcrumbs, and toast until golden. Sprinkle some crispy breadcrumbs over each serving for a crunchier bite.