This is one of my favorite combinations and has been for many years. The naturally sweet flavors of the squash, cabbage, and onion are rounded out by the nuttiness of toasted sesame seeds and dark sesame oil. I particularly enjoy this with brown rice.
Heat oils in a large nonstick skillet over medium-high heat. Add squash and onion; sauté for 7 minutes or until lightly browned. Stir in cabbage, water, and salt; cover and cook 5 minutes or until tender. Stir in sesame seeds and soy sauce. Serve immediately.