Buy It: Nordic Ware Aluminum Extra Large Cookie Sheet ($16, Walmart) Buy It: Crock-Pot 4.5-Quart Manual Slow Cooker ($25, Target) Buy It: Ozark Trail 9-Inch Cast Iron Griddle ($16, Walmart) Test Kitchen Tip: If you’re using wooden skewers, soak them in water for at least 30 minutes. Drain before using.