INGREDIENTS
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2 Tablespoons unsalted butter
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1 small onion, grated
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3 cloves garlic, minced
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1 (28 ounce) can crushed tomatoes
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1 Tablespoon fresh basil, chopped, plus additional leaves to top
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1 teaspoon salt
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1/2 teaspoon dried oregano
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1/4 teaspoon granulated sugar
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1 pound sweet Italian sausage meat
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Olive oil, for brushing
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10 slices provolone cheese, cut into halves
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10 slices mozzarella cheese, cut into halves
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1 pound refrigerated pizza dough
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Crushed red pepper flakes, to top, optional