Season the flank steak with salt and pepper. In a skillet over medium-high heat, cook the steak for about 4-5 minutes on each side, depending on your desired doneness.

Once cooked, let it rest for a few minutes before slicing it thinly.

In the same skillet, reduce the heat to medium and add the butter.

Crack in the two eggs and cook them sunny side up or over-easy, allowing the yolks to remain slightly runny.

While the steak and eggs are cooking, slice the bagels and toast them until golden brown.

Optionally, spread a little butter on them for extra flavor.

Take one half of a bagel, place a slice of American cheese on the bottom, followed by the sliced steak, the cooked egg, and then another slice of cheese on top.

Add ketchup or hot sauce if desired, and cap it off with the other half of the bagel.

To melt the cheese, microwave the assembled bagel for about 20-30 seconds or place it back in the skillet to warm it up quickly.