Creamy Potato and Apple Soup - The One Box

Ingredients

• 30g butter or extra virgin olive oil
• 1 large onion, peeled and roughly diced
• 2 cloves garlic, peeled and sliced
• 2 long sticks celery, cut into pieces
• 2 medium sized potatoes peeled and diced
• 1 small sweet potato peeled and diced
• 2 small or 1 large Granny Smith apple peeled and diced
• 1½ cups chicken bone broth or stock (or vegetable stock)
• Sea salt and black pepper to taste
• ¼ cup milk