Step #1 Cook the noodles according to package directions; drain then place this into a large bowl; set aside (if desired toss with a tbsp oil or butter to prevent sticking).
Step #2 In a skillet melted butter over med-heat/flame; add in onion & cabbage, cook stirring over med-heat/flame until tender.
Step #3 Spice up with salt & black pepper & cayenne (if using).
Step #4 Transfer to the bowl with the noodles; toss to mix.