Steps
1. In a small pot, melt the butter over medium heat.
2. Add the chopped onion and sauté until translucent, about 3 minutes.
3. Add the chopped carrot and diced potato; cook for 5 minutes, stirring occasionally.
4. Pour in the broth and add thyme, salt, and pepper.
5. Bring to a boil, then reduce heat and simmer for 20 minutes or until vegetables are tender.
6. Use an immersion blender or transfer the soup to a blender and puree until smooth.
7. Stir in the heavy cream and adjust seasoning if necessary.
8. Serve hot, garnished with fresh parsley.