Spray a baking dish with cooking spray and transfer the potatoes to the dish (no need to drain or rinse). Place the pot back in the base. Select "saute" mode. Melt butter, add in the dried onion flakes, heavy cream, garlic powder, dehydrated chive and black pepper. Mix well then add in half the cheddar cheese. Turn the heat off and mix until melted. Carefully, pour the cheese sauce on top. Then top with the remaining cheddar cheese.