Step 1

Mash filling: In a large bowl, combine chickpeas, lemon juice, hummus, olive oil, and Dijon mustard to a bowl. Use a potato masher or fork to mash the chickpeas until they start to come together into a creamy filling (you do want some texture!).

Step 2

Add seasonings: Stir in celery, dill, parsley, scallion, salt, and pepper. Taste and add more salt as needed.

Step 3

Assemble (see note 1): To assemble a sandwich, take two pieces of bread (toasted optional). Spread a thin layer of mayonnaise on each piece of bread, top with the chickpea filling, and lettuce.