Place the mushrooms, sesame oil, tamari and maple syrup in a bowl and marinate for 30 minutes to 12 hours (overnight) in a sealed container on the counter or in the fridge if marinating overnight.
Place all Raw Pad Thai Sauce ingredients into a food processor and process until smooth.
Rinse kelp noodle and massage the sauce into the noodles. Set aside and let marinate for 10 minutes.
Add yellow pepper, red pepper, zucchini, carrots, sprouts, green onion and marinated mushrooms and mix well. Top with cilantro, basil and a sprinkle of chopped raw cashews and red pepper flakes if you like some heat.
Serve cold or at room temperature