Preheat oven to 350°F. In a skillet combine the beef, onion, pickle, and spices (salt, garlic powder, ground pepper). Cook until the beef is no longer pink; set aside. Unfold the crescent dough into 4 rectangles, pressing down to seal where the triangles meet. Spoon the beef mixture onto the long side of each rectangle, then top with shredded cheese. Roll lengthwise and connect each end to form a circular roll. Brush with egg wash and top with sesame seeds. Bake for 12 minutes.
