Personally, I like to take them out of the fridge, take the lid off and dig right in! I think they are delicious cold and straight out of the jar. These can also be microwaved. Remove the lid and microwave in the jar for 1 minute to warm and enjoy straight from the jar. A third method is to broil to warm. Scrape around the inside of the jar with a knife to release from the side and turn upside down onto a baking tray and lift. The egg bites should come right out. Place the tray in a toaster oven set to broil/toast for 3-5 minutes until warmed through. Enjoy immediately! if you do not have a toaster oven, just place it in a regular oven with the top rack close at the highest placement.