Step 1

Preheat the oven to 350F. Cover a baking sheet with tin foil.

Step 2

Cut the bread into vertical slices, taking care not to cut all the way to the bottom of the loaf (you want the pieces still attached to the loaf). Then cut horizontal slices, creating a crisscross pattern of 1-inch cubes.

Step 3

In a large bowl, combine the cheese, dry mustard, garlic powder, salt, black pepper and Dijon. Stuff the cheese mixture into the bread cubes, taking care not to rip the bread from the base (if any cubes do fall out, place them back on — the cheese will help them stick). Drizzle the melted butter over the bread.

Step 4

Place the bread on the baking sheet and cover it completely with the tin foil. Bake for 15-20 minutes, then uncover and bake for an additional 10-15 minutes, until all of the cheese has melted and the bread has browned slightly. Top with the chives, then serve immediately.