Ingredient:

• 1 large fennel bulb, thinly sliced
• 1 small apple, thinly sliced
• 1/4 cup sliced sweet onion
• 1/3 cup olive oil
• 1/2 teaspoon grated lemon zest
• 2 tablespoons lemon juice
• 1/2 teaspoon grated orange zest
• 2 tablespoons orange juice
• 1/2 teaspoon Dijon mustard
• 1/2 teaspoon salt
• 1/8 teaspoon pepper