Begin by draining and rinsing one can of chickpeas. Mash them in a bowl until mostly broken down.

Scoop the flesh of one ripe avocado into the bowl. Squeeze in half a lemon's juice and add minced garlic if desired. Mix until well combined.

Add chopped green onions and celery to the mixture, along with chopped dill pickles, fresh dill, salt, and pepper. Gently fold to combine.

Taste the mixture and adjust seasonings as necessary. Aim for a balance of tangy, creamy, and savory flavors.

Spread the chickpea and avocado mixture on slices of bread, adding lettuce if desired, and assemble the sandwiches.

Cut the sandwiches in half for easy handling and serve immediately, or store in an airtight container for later.