Combine olive oil, lemon juice, Dijon mustard, black pepper, and salt in a large bowl, stirring well with a whisk. Add salad greens; toss to coat. Top with avocado.
MyRecipes is working with Let's Move!, the Partnership for a Healthier America, and USDA's MyPlate to give anyone looking for healthier options access to a trove of recipes that will help them create healthy, tasty plates. For more information about creating a healthy plate, visit www.choosemyplate.gov.