Steak Salad with Lemon-Walnut Vinaigrette and Whole-Grain Roll

• 3 ounces steak
• 1 lemon, juiced
• 1 tbsp. olive oil
• 2 tbsp. walnuts
• 1 tsp. Dijon mustard
• 3 cups baby spinach
• 1 whole-grain roll

Grill or broil steak until it reaches about 160 F (medium), and slice. In a blender or mini food processor, pulse lemon juice, oil, walnuts and mustard until smooth. Toss spinach and steak slices with dressing.

Serve with whole-grain roll.