01 -
Slice each croissant horizontally with a serrated knife, arrange cut side up on a large baking sheet ensuring space between halves, then broil for 2 to 3 minutes until lightly golden, watching closely to prevent burning.
02 -
Heat oil over high heat in a large nonstick skillet until shimmering; crack all eggs into the pan in a single layer and immediately break each yolk with a spatula for even cooking.
03 -
Reduce heat to medium-low, season eggs with black pepper, cook until whites are set, flipping once to fully cook through without runniness for safety and ideal texture.
04 -
Place one slice of ham or half slice of bacon on each toasted croissant bottom half, top with one cooked egg and a slice of American cheese, distributing cheese evenly over the egg.
05 -
Cover each sandwich with the top croissant half and microwave individually for 15 seconds to melt cheese without sogginess, then serve immediately while hot and crisp.