Apple Walnut Salad

Ingredients (for 2 servings)

• 0.25 cup — extra-virgin olive oil
• 2 tbsp — balsamic vinegar
• 2 tbsp — honey
• 1 tsp — spicy brown mustard
• 0.25 tsp — fine sea salt
• 6 cup — mixed greens
• 1 whole — apple
• 0.25 whole — red onion
• 0.5 cup — walnuts
• 0.25 cup — feta or blue cheese