In a small bowl, add eggs and milk or water (if desired), whisk until eggs are beaten.

In a medium skillet, melt butter on medium heat. Once butter has melted, pour eggs in. Push eggs around in the pan until cooked through.

In the meantime, toast bagels in a toaster or oven, if desired.

Divide eggs evenly between each bagel and top with sliced cheese. Serve and enjoy.