Step 1

Start by baking potatoes for about an hour in a preheated oven (400 F). Then, set them aside to cool for a few minutes. Melt butter in a saucepan and add onions to it. Saute the onions until brown in color. Stir in flour and mix to make roux for the soup.

Step 2

Pour in water along with cornstarch, stock, mashed potatoes, and spices. Bring the mixture to a boil and reduce the heat. Let it simmer for about 5 minutes. Stir in chopped baked potatoes and half-and-half. Bring it to a boil, reduce the heat, and let it simmer again for about 15 minutes until the soup is thick.

Step 3

Now, transfer soup into a bowl with cheddar cheese on top. Garnish with a half teaspoon of bacon and chopped green onion and serve.