Place corn, still in it's husks, directly on the oven rack. Cook until corn is tender and cooked through, roughly 40-45 minutes. (Note: Can also bake corn on a baking sheet for the same amount of time.)
While corn cooks, place softened butter, garlic, salt, and pepper in a small bowl. Using a hand mixer, beat on low until ingredients are mixed and butter is fluffy, about 2-3 minutes. Set aside.
When corn has cooked, peel down and discard husks. Rub each ear of corn with 1 tablespoon of mixed butter. Sprinkle with paprika, Parmesan, and parsley on top. Serve immediately.