Steps
1. Beat the egg in a bowl and season with salt and pepper.2. Heat a non-stick pan over medium-high heat and spray with cooking oil.3. Pour in the egg and spread it out to create an even omelette.4. Cook until the egg is golden and cooked through, about 2 minutes.
5. Toast the two slices of bread and spread a few teaspoons of ketchup on each slice.
6. Place the omelette on top of one slice of bread, and top with the cheese slices and spinach leaves.7. Finally, top with the other slice of bread and enjoy.