2 ½cupsshredded cheddar cheeseor a combination of cheddar and gruyere
1cupcookedpureed butternut squash (see cooking note above), from 1/2 medium squash
⅛tspnutmeg
⅛tsppepper
saltto taste
For topping
1cupfresh breadcrumbs
2tbspminced fresh parsleyor 1 tsp dried
1tsplemon zestoptional
2tbspmelted butter
½cupshredded cheddar cheese
Instructions
Preheat oven to 375 ºF.
Cook pasta in a large pot of salted, boiling water until al dente (for elbow macaroni, that's about 7 minutes, for penne, more like 10). Drain and set aside.
Meanwhile, melt butter in a large saucepan over medium heat. Add onion and cook until softened, about 3 minutes. Add garlic and cook 30 seconds. Add flour and cook, stirring constantly, 1 minute. Gradually whisk in milk, a bit at a time.
Bring sauce to a boil over medium-high heat, then reduce to low and cook until thickened slightly, about 5 minutes.
Add shredded cheese, whisking until smooth. Whisk in butternut squash puree, nutmeg, pepper, and salt to taste. Add pasta to the sauce and stir to evenly coat. Transfer pasta to a buttered 2 quart (2 litre) baking dish.
In a medium bowl, combine all topping ingredients and sprinkle evenly over pasta. Transfer dish to oven and bake until topping is golden and sauce is bubbling at edges, about 20 minutes.