noodles with kimchi and sweet potato

i know, noodles again. but this is my favorite recipe we have made in our dorm so far. after we ate it for lunch, i looked forward to eating the leftovers for dinner all day.
we hit up our local asian market for some kimchee (with skate fish) and...

SRIRACHA! but don't use any in this recipe, because kimchi + sriracha would be too spicy, even for us.
anyhoo, the recipe:
makes about 3 servings
*200 grams (7 oz) dried asian noodles (ours were flat and white...i'm not up on my noodle terminology and the package didn't have a specific name. but you could also use udon, soba, or many other types of asian noodles)
*an 8 oz package of kimchi (like i said, ours had skate in it too, but it would be just as good with standard kimchi)
*a splash of soy sauce
*1 small to medium sized sweet potato
*half a yellow onion, sliced
*2 teaspoons butter, or butter substitute (you could probably use any oil too)
*a handful of baby spinach.
*a handful of peanuts, to garnish
1. preheat oven to 450 degrees F. cut ends off sweet potato and place in pan in oven for 40 min-1 hour, or until soft.
2. heat butter in a pan. cook onions until soft, about 20 minutes, stirring occasionally.
3. cook noodles according to package directions. drain.
4. add soy sauce, spinach, and kimchi to noodles. stir.
5. cut sweet potato into bite sized pieces. add potato and onion to noodles. stir.
6. top each serving with a sprinkle of peanuts.
ps-check out the giveaway at lucky tastebuds