Pizzadilla (Grilled Pizza Sandwich)
Ingredients:
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20 ounces prepared pizza dough
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2 tablespoons olive oil, divided, or as needed
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1 cup pizza sauce, divided
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8 ounces mozzarella cheese, divided
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½ cup cooked Italian sausage, or to taste
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½ cup cooked mushrooms, or to taste
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½ cup cooked red onions, or to taste