If you're someone who thinks turning on the oven in July is a crime that should be punishable by death, or maybe if you just love low-effort kitchen hacks, your slow cooker is about to become your new best friend. Roasting garlic is easy and practically foolproof. No more scorched bulbs or babysitting the oven. Just slice the top off a few whole garlic heads, drizzle them with olive oil, wrap them in foil, and nestle them into your slow cooker.