
1. Coarsely mash chickpeas in a large bowl with a fork or potato masher. Stir in the celery, parsley, mayonnaise, shallot, lemon juice, mustard, sea salt, and several grinds of black pepper.
2. Spread one side of toasted bread slices with desired amount of mayonnaise and mustard. Add chickpea salad and lettuce or microgreens.