-Thaw the hash browns in refrigerator
-Preheat oven to 350º
-Butter the bottom of a 9x13 pan using part of the 3 tbsp of margarine.
-In the pan, put cream of chicken soup, sour cream, salt, pepper,and onion powder and mix together
-Then add the potatoes and mix together
-Add the cheese and mix together
-Cut the rest of the 3 tbsp. of margarine into the potatoes
-Spread mixture evenly in pan
-Melt 1 stick of margarine in pan and then add frosted flakes. Mix to coat.
-Put frosted flakes evenly on top of potatoes
-Bake uncovered at 350º for 1 hour