How to Make It
Preheat the oven to 350°. In a medium saucepan, melt the butter. Stir in the flour until smooth and cook over moderate heat, stirring, until pale brown, about 4 minutes. Slowly whisk in the milk until smooth and bubbling. Cook over moderately low heat, whisking often, until very thick, about 10 minutes. Stir in the goat cheese, Parmesan, salt and nutmeg.
Meanwhile, in a large pot of boiling salted water, cook the penne until al dente. Drain the penne and return it to the pot. Stir the cheese sauce into the pasta. Mound the penne in eight 2-cup ovenproof dishes or spoon into a 9-by-13-inch baking dish. Tuck the Taleggio into the pasta and scatter a few pieces of the cheese on top. Bake the pasta for about 25 minutes, or until heated through and nicely browned on top. Serve right away.