Score the bread loaf crosswise and lengthwise into 1 inch squares, cutting almost through to the bottom, but leaving it intact. Place the loaf on an oversized piece of aluminum foil (enough to wrap around the whole loaf).
In a small bowl, combine the cheeses and garlic, mix. Stuff the cheese blend evenly into all of the slits, nooks and crannies.
In another small bowl combine the melted butter, mustard, Italian seasoning, salt and pepper. Spoon or pour mixture evenly over stuffed cheese slits.
Wrap entire bread loaf in heavy duty aluminum foil and place in the oven for 15 minutes. Remove loaf and open the top of the aluminum foil to expose the top of the bread. Bake for an additional 5-10 minutes or until the cheese is melted and tops are nicely brown and crisp.
Remove from the oven and cool for several minutes before serving.
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