Boil your noodles per package directions. When done cooking drain and rinse with cool water.
If using frozen peas add into boiling noodles in last 1-2 minutes to defrost.
While your water is boiling dice your onion, pickle, celery and bell pepper.
In a high speed blender or food processor add drained & rinsed cannellini beans, relish, tahini, mustard, garlic powder, lemon juice, and water. Blend until smooth, add more water if you desire a thinner consistency.
Add noodles, veggies and sauce into a large bowl and mix. Salt & pepper to taste.
Cover and chill in refrigerator until serving.