"Want a fast way to turn a salad into a hearty meal? Add sausage. The mustard dressing also goes with smoked salmon or chicken. —Deborah Williams, Peoria, Arizona..."
INGREDIENTS
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4 teaspoons olive oil, divided
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2 fully cooked Italian chicken sausage links (3 ounces each), cut into 1/4-inch slices
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1/2 medium onion, halved and sliced
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4 cups fresh baby spinach
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1-1/2 teaspoons balsamic vinegar
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1 teaspoon stone-ground mustard