Creamy Potato and Asparagus Soup

Ingredients

• 1/2 cup onion (chopped)
• 1/2 tsp dried thyme leaves
• 1 large potato (peeled and diced)
• 1 1/2 cups low-sodium chicken broth or water
• 500 g fresh asparagus (ends trimmed)
• 2 tsp lemon juice
• 1/2 cup 1% plain yogurt
• 1 cup 1% milk