Roll each biscuit into a 12-inch rope and tie into a knot; tuck ends under. Place 2 inches apart on a greased baking sheet. In a small bowl, combine melted butter, Parmesan, garlic powder, dried oregano, dried parsley and salt. Brush knots with half of butter mixture.
Bake for 8-10 minutes, or until golden brown. Brush warm knots with remaining butter mixture.