2 1/2 to 3 hours for spare ribs or 1 1/2 to 2 hours for baby back ribs.
Place the ribs in the oven and bake, undisturbed, for 2 1/2 to 3 hours, or until ribs are very tender. Remove the ribs from the oven and peel back the foil so that the ribs are exposed. Using a pastry brush or the back of a spoon, coat the racks lightly on the meaty sides with barbecue sauce. For pork ribs that literally fall off the bone, I use an oven to slowly cook the ribs. The recipe is quite simple: mix 18 oz. of barbeque sauce (1 bottle) with 1/2 cup (120 mL) orange juice. Pour into a 9x13-in pan. Place ribs in pan and flip using tongs so ribs are coated. 1 Brush the ribs liberally with barbeque sauce and place each portion in its own piece of foil. 2  Wrap tightly and refrigerate for at least 8 hours, or overnight. 3  Preheat oven to 300 degrees F (150 degrees C). 4  Bake ribs wrapped tightly in the foil at 300 degrees F (150 degrees C) for 2 1/2 hours. Make sure the aluminum foil is long enough to cover the bottom of the pan and fold back over to cover the ribs. Arrange the ribs in the roasting pan. Distribute the lemon and onion slices over the ribs. Pour the 1/2 cup of water into the pan. Cover the ribs with foil and bake in a 350 F oven for 1 hour. 1 Cover the baking dish with foil and place on center rack of pre-heated oven. 2  Bake for approximately 2 1/2 - 3 hours (depending on the size of the ribs you are using). 3  Remove the ribs from oven and drain any grease from dish; reserving the foil for later use (waste not, want not). Brush the cooking grates clean. Place the ribs on the grill over direct medium heat and cook for 1 hour, with the lid closed, occasionally turning the packets over for even cooking, making sure not to pierce the foil. Remove the packets from the grill and let rest for about 10 minutes. Bake the ribs: Set the oven to 300°F. Move the ribs to an oven rack in the middle of the oven. Roast for 2 1/2 to 3 hours for spare ribs or 1 1/2 to 2 hours for baby back ribs. Halfway through cooking, cover the ribs with aluminum foil to protect them from drying out. 1 Preheat oven to 300 degrees F (150 degrees C). 2  Bake ribs wrapped tightly in the foil at 300 degrees F (150 degrees C) for 2 1/2 hours. 3  Remove from foil and add more sauce, if desired.
http://www.foodnetwork.com/recipes/emeril-lagasse/ejs-simple-oven-bbq-ribs-recipe2.html http://www.cookingforengineers.com/recipe/45/Oven-Baked-Spare-Ribs-Two-Ways http://allrecipes.com/recipe/16091/baby-back-ribs/ http://www.cooks.com/recipe/n78bc5dm/ds-oven-barbecued-pork-ribs.html http://www.food.com/recipe/easy-oven-baked-ribs-516009 http://www.weber.com/recipes/pork/foil-wrapped-baby-back-ribs http://www.thekitchn.com/how-to-make-great-ribs-in-the-oven-cooking-lessons-from-the-kitchn-96973 http://allrecipes.com/recipe/16091/baby-back-ribs/
how long to cook pork ribs in oven wrapped in foil to cook fast