Thaw ribs overnight or in cold water for about an hour. Preheat oven to 400℉. Take ribs out of plastic wrapping and wrap in tin foil. Place in oven and heat ribs for about 40 minutes. If you would like a crispier outer, take ribs out of foil at 30 minutes and place under broiler for about 3-5 minutes per side, checking to make sure they don't burn.