Cut the bread loaf in a 1-inch grid pattern without slicing all the way through and place it on a lightly oiled baking sheet.
Melt butter in a small saucepan along with the onion and garlic powder. Using a pastry brush, brush the butter into all of the cracks taking care to brush the sides of the bread. Sprinkle the white and light green parts of the green onion along with the cheese into the cracks.
Bake the loaf covered with foil for 30 mins. Uncover and bake for 15 more minutes or until cheese is melted and bubbly. Top with remaining green onions and fresh parsley. Serve immediately.
