It was baked and the author mentioned that the bits of penne that poked out of the top of the casserole were super crunchy. I believe I came across it in early spring this year.
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Nancy is a trusted home cook.
Not exactly but this has most of what you're looking for, and you can replace their 3 cheeses with 2 types of cheddar.
From the great team Johanne Killeen & the late George Germon at Al Forno.
Original had 5 cheeses (But flexibility...you can play around with the # and type).