INGREDIENTS
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For the buns: 2 3/4 cups unbleached all-purpose flour 1/2 cup finely grated Parmesan cheese 1 teaspoon salt 1 teaspoon onion powder 1 Tablespoon sugar 2 1/2 teaspoons instant yeast 4 Tablespoons unsalted butter, softened 1 large egg 2/3 to 3/4 cup lu