To Make the Spicy Navy Bean Hummus
In a food processor, combine the rinsed and drained navy beans, Italian salad dressing, and spicy brown mustard.
Cover and process until completely smooth. Alternatively, mash the beans with a fork or potato masher in a bowl, then stir in the dressing and mustard until well combined.
To Make the Veggie Filling & Assemble
In a medium bowl, combine the chopped summer squash, broccoli, tomatoes, olives, and fresh parsley.
Drizzle with the 2 tablespoons (30 ml / 1 fl oz) of Italian salad dressing and toss gently to coat all the vegetables.
Cover the bowl and chill in the refrigerator for at least 2 hours, or up to 24 hours, to allow the flavors to marinate.
To assemble, spread about 2 tablespoons / 30g (1.06 oz) of the Spicy Navy Bean Hummus inside each pita half or onto one side of each tortilla.
Spoon the chilled vegetable mixture evenly into the pitas or onto the tortillas. If using tortillas, fold them in half or roll them up burrito-style.
Don't skip the chill time! Marinating the vegetables is key, as it allows them to soften slightly and absorb the zesty dressing, creating a much more flavorful sandwich.