Divide spinach evenly between 2 salad plates.
Heat oil in a large nonstick skillet over medium-high heat. Add mushrooms, and cook 6 minutes or until tender, stirring often. Add rosemary, salt, and pepper. Stir in balsamic vinegar; cook 1 minute. Spoon warm mushroom mixture evenly over spinach.
Oxmoor House Healthy Eating Collection
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