Potato Soup using Mashed Potatoes

Dice the large onion into small pieces, about ¼ inch in size.

Melt the butter in a large pot over medium heat.

Add the diced onion to the melted butter and cook, stirring occasionally, until softened and translucent, about 3 to 4 minutes.

Pour the two cans of chicken broth into the pot, stirring to combine with the onion and butter.

Add the mashed potatoes to the broth mixture, breaking up any large lumps with the spoon and stirring until well combined.

Bring the soup to a gentle simmer over medium heat and cook for 5 minutes, stirring occasionally.

Reduce the heat to low and stir in the milk until fully incorporated.

Simmer gently for an additional 2 to 3 minutes until the soup reaches the desired consistency and is heated through.

Taste and adjust seasonings as needed, then ladle the soup into bowls and serve hot.