Add 2 tablespoons tamari sauce, 1 tablespoon honey, 1 teaspoon sesame oil, and 1/4 cup reserved pasta water to the skillet with mushrooms and broccoli, on medium heat. Stir to combine, to make sure the sauce coats the vegetables.
On medium heat, add cooked and drained pasta to the skillet, mix well until the sauce coats the pasta, taste and season with salt, if desired.
To serve, top each pasta serving with some whole cashew nuts and some finely crushed ones (use knife to crush them into smaller pieces).