Ingredients
- 1 tablespoon olive oil
 - 1 white onion, sliced
 - 2 Red Delicious apples, cored and cut into bite-size pieces
 - 2 teaspoons apple cider vinegar
 - 1/8 teaspoon sea salt
 - 1/8 teaspoon ground black pepper
 - 4 cups chopped kale leaves
 
Directions
Heat olive oil in a large skillet over medium heat; cook and stir onion until tender, about 4 minutes. Add apples, vinegar, salt, and pepper; cover skillet and cook until apples are tender, about 3 minutes. Add kale; cover and cook until kale is tender, 4 to 5 minutes.
