You can either use a toaster or an oven for this step. If you are using an oven, set the broiler to low. Place the croissant halves in an oven proof tray, Toast for 2 minutes or until the color changes.
If you do not have a lid for your bowl, use a microwave-safe plate to cover it.
To easily remove the patty, you can flip the bowl and gently tap on the bottom until the egg falls out. If you break the shape, scramble the egg and follow the remaining steps.