A smear of creamy avocado mash on multi grain toast topped off with peppery arugula makes this avocado toast a quick and satisfying breakfast, lunch, or dinner.
Whisk together all ingredients until emulsified.
Cut avocado in half and remove the pit. Score the avocado halves and then scoop the avocado into a small bowl.
Add the zest, lemon juice, salt, red pepper flakes, and olive oil and mash together with a fork.