crock pot cheesy potato-broccoli soup

Ingredients

• 1 can broccoli cheese soup, 10.5 oz
• 1 can evaporated milk, 12 oz
• 1/2 box velveeta
• 2 pounds frozen broccoli florets
• 4-5 - large potatoes, your favorite kind, cut into cubes for cooking
• 2 cups reserved starchy water from potatoes
• 1/2 stick butter
• 1 - 2 tablespoons onion flakes, dehydrated
• 1/2 teaspoon black pepper
• 1/2 teaspoon salt
• 1/2 teaspoon celery salt
• 1 teaspoon garlic powder
• 1 teaspoon poultry seasoning
• dash hot pepper sauce, optional