INGREDIENTS
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1 pound refrigerated pizza dough
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2 tablespoons olive oil
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2 tablespoons unsalted butter, at room temperature
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60 slices pepperoni (from a 6-ounce package)
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8 mozzarella string cheese sticks
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2 tablespoons grated Parmesan, plus more for serving
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1 tablespoon olive oil
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1 sweet Italian sausage link, casing removed (about 1/4 pound)
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1 clove garlic, finely chopped
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Half a red bell pepper, finely chopped
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Half a small yellow onion, finely chopped
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1/4 cup tomato paste
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Pinch crushed red pepper flakes
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Kosher salt and freshly ground black pepper