Slow Cooker Tater Tot Casserole

Bahan-bahan (8 porsi)

• 32 ounces Tater Tots (1 bag)
• 1 pound lean ground beef
• 1 small onion (diced)
• 2 cups mixed vegetables (fresh or frozen)
• 10.5 ounces condensed cream of mushroom soup (1 can)
• 1 cup milk
• ¼ teaspoon garlic powder
• 1 teaspoon dry mustard powder
• salt and black pepper (to taste)
• 2 cups shredded cheddar cheese