
Preheat the oven to 350°F. Cut a grid into the top of the loaf with a serrated bread knife, being careful not to cut through the bottom of the bread.
Mix together the cream cheese, onion powder, and garlic powder with a handheld mixer or a fork in a small bowl.
Stuff and spread the cream cheese into all the crevices of the bread, followed by the diced jalapeños and the shredded cheese.
Transfer the bread to a large baking sheet and bake for 20 minutes.
Brush the top of the bread with the melted butter and bake for another 5 minutes. Garnish with green onions.