"Make and share this Sheet Pan Salmon Dinner recipe from Food.com...."
INGREDIENTS
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3 large leeks, white and light green parts only, sliced crosswise into 1/4-inch slices, rinsed
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1/2 cup plus 2 tablespoons olive oil, divided
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kosher salt & freshly ground black pepper
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2 -3 large russet potatoes, about 1 1/4 pounds
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2 lbs center-cut skinless salmon fillet
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3 tablespoons country style mustard
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4 cups lightly packed baby arugula
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1 lemon, juice of