Tip: when removing, use a small spatula to remove from sides and take out, I find a butter knife breaks it up too much. They will be 'eggy' when removing but will get more solid once they cool completely.
Store in the fridge in a container with lid or even a Zip Loc bag laying flat, for up to 3 days. I say "up-to" because that's the longest they last in our house. I have no idea if they freeze well unfortunately because they get gobbled up! They reheat easily in the microwave for 30 seconds.