Preheat your oven to 375℉.
Prepare a 10-inch round pie or cake pan with non-stick spray.
In a large bowl, combine artichoke hearts, spinach, mozzarella, sour cream, parmesan, mayonnaise, garlic powder, onion powder, salt, and pepper. Set aside.
Unroll each tube of crescent rolls and pinch seams to form a large rectangle.
Evenly spread the filling mixture over the dough.
Roll the dough from the bottom short side into a log shape.
Cut the log into 7 or 8 equal slices using a sharp knife or kitchen twine.
Arrange the rolls in the prepared pan and brush the tops with beaten egg.
Bake uncovered for 25 minutes or until golden brown and bubbly.
Garnish with parsley if desired and serve warm.