Begin your crockpot cooking by avoiding overfilling the crockpot, as tightly packed food will not cook properly and could cause illness. Prep ingredients like chopping meat and vegetables in advance for easy assembly. Browning meat before adding to the crockpot is not required but will provide more flavor, and any browned bits from the pan should be added. Pay attention to temperature changes when adding food to avoid cracking the stoneware, such as only adding cold or room temperature food to a cold crockpot or preheating for hot additions.