Mix topping together. Peel potatoes, shred and set aside. Melt butter, combine with sour cream. Add onions and soup, add potatoes and cheese. Put in a casserole dish (sprayed with non-sticking cooking spray). Add topping, bake for 45 minutes at 350F.
Can be prepared the day before.
Casseroles - Quiches
Cajun Country -- New Iberia, Louisiana