Cheesy Potato Soup

Bahan-bahan (4 porsi)

• 3 cups chicken broth ( or stock, not reduced sodium)
• ½ teaspoon onion powder
• ½ teaspoon dry mustard powder
• 1 pound baking potatoes (peeled cut into 2" pieces)
• 1 tablespoon butter
• 2 cloves garlic (minced)
• 1 tablespoon all-purpose flour
• 1 cup milk
• 4 ounces cream cheese (softened and cut into small cubes)
• 1 cup shredded cheddar cheese
• ½ cup shredded Gruyere cheese
• ¼ teaspoon salt
• ¼ teaspoon black pepper