Cheesy Mashed Potato Casserole

I found this here http://www.copykat.com/2010/12/24/cheesy-mashed-potato-casserole/

Yield: 8 servings.
Instant Mashed Potatoes – prepared according to package directions for 8 servings
3/4 cup sour cream
1 teaspoon dried chives
1 teaspoon dried parsley
1/2 teaspoon black pepper
1 cup French’s Fried Onion Rings
3/4 cup shredded cheddar cheese
Preheat oven to 350 degrees. Prepare instant mashed potatoes according to the package directions. Add sour cream, chives, parsley, and pepper to mashed potatoes. Place mashed potatoes in a 1 1/2 quart casserole dish. Top mashed potatoes with cheddar cheese, and sprinkle the French’s Onion Rings around the edge of the casserole. Bake for about 20 minutes or until cheese melts.

This dish can be made ahead and then reheat later. If you are going to reheat this dish later, add the shredded cheese, but wait to top with the French Fried Onion Rings until you are ready to reheat this dish.