Irene's Noodles and Sauerkraut

Yield:	1 Servings
Categories:	Pasta, German

2	md	Onions; chopped
2	tb	Vegetable oil
6	tb	Butter plus butter to dot top of casserole (divided)
1	cn	(27 ounces) sauerkraut
1		Box or bag (12 ounces) medium-wide egg noodles