Broccoli Cheese Soup

1/2 cup butter
1 onion chopped
1 (16 oz) package frozen chopped broccoli
4 cans chicken broth
1 lb processed cheese, cubed
2 cups milk
1 tablespoon garlic powder
2/3 cup cornstarch
1 cup water

1) In a stockpot, melt butter over medium heat. Cook onion in butter until softened. Stir in broccoli and cover with chicken broth. Simmer until broccoli is tender (about 10 minutes)

2) Reduce heat, and stir in cheese cubes until melted. Mix in milk and garlic powder

3) Stir in cornstarch into 1 c. water and then stir into soup. Stir frequently until thick.