Don’t lift the lid! According to the Reynolds company, it’s best to leave the lid on your crockpot / slow cooker the whole time you’re cooking. Each time you lift the lid to check or stir your food, it adds 20 minutes to the cooking time to compensate for the heat that escapes. If you really must stir to mix ingredients, only do it once and then set your timer for an extra 20 minutes. 4 Slow Cooker Tips You Didn’t Know 1. Use a crockpot liner – These make for super quick clean up after an especially messy meal, like chili 2. Condensation catcher – Put a dish towel…