Prepare the Dressing: Gather a small blender or food processor and add all of your dressing ingredients—spinach, basil, dill, green onions, nutritional yeast, garlic, avocado, lemon juice, white grape juice vinegar, salt, and pepper. Blend until completely smooth and velvety in texture before setting aside.
Mash the Chickpeas: In a large mixing bowl, add your rinsed and drained chickpeas. Using a fork or potato masher, lightly mash them until they're mostly broken down but still have some texture left—this will provide substance to your salad filling.
Combine Fresh Ingredients: Incorporate cabbage, red onion, cucumber, jalapeño pepper into the bowl with mashed chickpeas along with a pinch of salt and pepper for seasoning. Gently toss everything together until well mixed.
Add Creamy Dressing: Pour your prepared green goddess dressing over the chickpea mixture and toss everything together until each ingredient is fully coated in that delicious herbaceous goodness.
Assemble Your Sandwiches: Spread hummus on one slice of bread and Dijon mustard on another slice. If desired, layer some fresh spinach onto the slice with hummus before adding a generous scoop of your green goddess salad filling on top.
Enjoy: Place the second slice of bread atop your sandwich creation to complete it before slicing in half if preferred. Serve immediately or wrap up for an enjoyable lunch later.