Apple Spinach Chicken

Bahan-bahan (4 porsi)

• 2 teaspoons vegetable or canola oil
• Four 4-ounce skinless, boneless chicken breast halves
• ¼ teaspoon salt
• ¼ teaspoon freshly ground black pepper
• 1 medium garlic clove, (minced (about ½ teaspoon))
• 1 tablespoon spicy brown mustard
• ½ cup apple cider
• 1 medium Granny Smith apple, (cored and sliced)
• 6 cups fresh baby spinach or chopped Swiss chard