Over medium-high heat, warm up a nonstick pan using a light coating of oil spray if needed.

Crack the egg into the pan once the surface area is warm, scrambling the egg in the pan and cooking too desired texture.

While the eggs are cooking you can add toast to the toaster. Toast the bread to your desired level of crispiness.

While the bread is toasting, cut the avocado in half and remove the pit. Scoop out the avocado flesh and place it in a small bowl.

Add the lemon juice, arugula, salt, and pepper to the bowl and mash everything together with a fork until you reach your desired consistency.

Place the avocado mixture on top of the toasted bread.

Serve and enjoy!