Slice the salmon lengthwise into 4 to 5-inch long sheets about 1/4-inch thick. Place two slices on plastic wrap, salt and pepper fish, lay a sheet or nori on top. Place strips of squash on top of nori sprinkle with scallions, place another piece of plastic wrap on top and roll. Set in refrigerator to set (may be made in advance, up to this point.)
Remove plastic wrap and heat a saute pan with 2 tablespoons peanut oil. Saute roll in pan rotating every minute. Depending on desired temperature- approximately 4 minutes of cooking time. Deglaze with soy sauce.