Make the quick pickeled onions first by putting all the ingredients in a small bowl and let sit on the counter.
Prep you ingredients: Slice cucumbers, peel and slice avocado.
Make the pesto by adding all ingredients into a high speed blender, like vitamix and turn on high. Blend until desired consistency is reached. I left mine a little chunky
Toast your bread in a toaster or pre-heated oven at 350f for 4-8 minutes
Build your toasts: spread 1/4 cup pesto on one piece of toast, layer with avocado, cucumbers, pickeled red onion and whatever toppings you desire.