Preheat oven to 375°F.
Unroll both cans of crescent rolls and separate into 16 triangles.
On an ungreased baking sheet, arrange wide sides of the crescent rolls in a 5-inch circle with the thin ends pointing outward. Wide ends will overlap one another. This should look like a big sun when completed.
Place 8 cheese halves on the wide portion of the triangle closest to the center of the ring.
Top with sliced roast beef.
Cover with the remaining 8 cheese halves.
Bring each dough triangle up over the filling, tucking the tips under the bottom layer of the dough to secure it.
Repeat, forming a ring. Brush crescent dough with egg wash and sprinkle with kosher salt and black pepper.
Bake 20 to 25 minutes or until dough is golden brown and thoroughly baked through.
Cool 5 to 10 minutes before cutting. Garnish with chopped parsley and serve with warm au jus.