INGREDIENTS
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1 round loaf artisan bread (16- to 20-ounce loaf)
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1 1/2 to 2 cups (6 to 8 ounces) shredded cheese, like Monterey Jack, mozzarella, provolone, cheddar, or a mix
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1/4 cup unsalted butter
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Optional mix-ins: cooked bacon or sausage, minced chives or sliced green onions, red pepper flakes, chili powder