Potato, Leek, And Carrot Soup - cooking recipe

Ingredients

4 -5 medium potatoes, peeled and diced
2 carrots, peeled and diced
3 tablespoons butter
1 large leek, white and half of the green, washed and diced
2 tablespoons flour
6 cups chicken stock
1 1/2 cups instant mashed potatoes
1 cup half-and-half
Garnish
cheddar cheese or green onion, if desired

Preparation

Melt butter. Saute leek and carrot until leek is soft, about 10 minutes.
Add flour; stir until smooth.
Add stock and potatoes. Simmer for 25 minutes.
Remove from stove. Add instant potato flakes. Stir until smooth. Let sit, covered, 5 minutes.
Add half-and-half.