INGREDIENTS
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8 ounces elbow macaroni
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3 tablespoons unsalted butter
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3 tablespoons all-purpose flour
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1 tablespoon ground (powdered) mustard*
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1 teaspoon smoked paprika**
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1/2 cup onion, diced small
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3 cups whole milk
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1 large egg
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9 ounces sharp cheddar cheese, grated
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1 teaspoon kosher salt
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1/2 teaspoon black pepper, freshly ground
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3 ounces sharp cheddar cheese, grated
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3 tablespoons butter, melted
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1 cup panko breadcrumbs