Potato Spinach and Sausage Soup

I have been working on this recipe for awhile now and have been trying to make it just right so the texture and flavor were correct. So give it a whirl and let me know how you like it.
This recipe makes enough for 4 large bowls or 6 small bowls of soup.

2 tsps of olive oil
1 cup of diced onion
6 cups of chicken broth (I buy the Pacific Natural Foods Organic Chicken Broth)
2 cups of mashed potatoes
1 cup of shredded cheddar cheese
1/2 tsp salt
1/4 tsp of pepper
1 to 1/2 cups of diced kielbasa sausage
1/2 pound of frozen spinach(drained well)

Boil 12 peeled and quartered red potatoes for 10 12 minutes or until soft. Once cooked through mash them up with a masher or throw them in your blender.

Saute the diced onion in the olive oil on medium high heat for 3 to 4 minutes or until translucent. Once sauteed add potatoes and chicken broth and bring to a simmer. Simmer for 3 minutes and then blend the soup well either in the blender or with a hand blender until smooth. Once smooth add the remaining ingredients and heat until warm.
Serve with a warm soft roll and ENJOY!