Add the peeled and diced potatoes to the pot. Stir everything well so the potatoes get coated with the butter and aromatics. Sprinkle in the dried thyme, salt, and pepper.
Add The Broth
Pour in the chicken or vegetable broth. The liquid should just cover the potatoes. Let it simmer for about 15 minutes or until the potatoes are fork-tender.
Stir In The Cream Of Mushroom Soup
Once the potatoes are soft, add the can of cream of mushroom soup. Stir thoroughly to combine everything. Reduce the heat to low and allow it to cook for another 5 minutes.
Add The Milk
Slowly pour in the milk, stirring constantly. Let the soup heat through for about 5-7 minutes, but avoid boiling it, as this can affect the creaminess. Adjust the seasoning with more salt and pepper if needed.
Serve And Garnish
Ladle the creamy potato soup into bowls and top with your favorite garnishes like shredded cheese, crispy bacon, or fresh green onions.