Crock Pot Mac and Cheese

Bahan-bahan (8 porsi)

• 2 cups elbow macaroni (uncooked)
• 10.5 ounces condensed cream of chicken soup (1 can)
• 3 cups shredded cheddar cheese
• 1 cup shredded gruyere cheese
• ½ cup mayonnaise
• ½ cup sour cream (regular or light)
• 1 teaspoon onion powder
• ½ teaspoon dry mustard powder
• ½ teaspoon black pepper