Add the basil, walnuts, lemon juice, black pepper, garlic powder, olive oil, and water to a blender or food processor.
Blend until smooth, with some nut pieces remaining for texture
To Make The Toast
Toast the bread to your taste
Divide the avocado slices evenly per toast slices
Spread 2 Tbsp of the pesto over the avocado slices. Add the microgreens to garnish and season with black pepper.
Drizzle with olive oil and lemon juice from the wedges and serve immediately
Notes
For ease, the pesto can be made ahead of time and stored in a covered container in the refrigerator. Pesto will keep for 2 -3 days in an air-tight container in the fridge.