INGREDIENTS
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•1lb refrigerated (or homemade) pizza dough
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•1 cup fresh ricotta cheese
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•1 cup grated mozzarella cheese
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•1/4 cup grated Parmesan cheese
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•8 slices sandwich pepperoni, quartered
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•1 medium onion, sliced root to tip
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•1/2lb ground Italian sausage
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•1 egg beaten (optional)