Season both sides of your slab of ribs with salt and pepper and then cut them into your preferred portions, if you prefer.
Add your ribs to a roasting pan, in a single layer, and then add the cup of water from the side.
Tightly cover the pan with aluminum foil to allow for your ribs to steam. An alternative method would be to add a large piece of aluminum foil to a sheet pan and line your ribs on it, add the water and then seal the foil around itself, if you don’t have a large roasting pan.
Roast covered ribs in a 350 degree oven for 1 1/2 hours. Remove from oven and uncover and let them rest a slightly cool for 30 minutes. At this point you can put them in a smaller pan and cover them for grilling at a later time.
When you are ready to grill, remove your meat from the refrigerator and bring them to room temperature for 30 minutes then slap those babies on the grill.
After a few minutes turn them and brush your favorite BBQ sauce on the top side. Turn them again, after a few minutes, and brush sauce to the other side too. Continue doing this a couple more times until you have enough sauce on them and they are slightly charred around the edges.
Take them off the grill and let them cook for a few minutes before cutting them. If you had already pre-cut them then you are ready to eat!