Preheat oven to 250 degrees.
In a bowl, combine all dry ingredients and mix well. Place each slab of baby back ribs on a piece of heavy-duty aluminum foil, shiney side down. Sprinkle each side generously with the dry rub. Pat the dry rub into the meat. Refrigerate the ribs for a minumum of 1 hour. In a microwavable container, combine all ingredients for the braising liquid. Microwace on high for 1 minute.
Place the ribs on a baking sheet. Open one end of the foil on each slab and pour half of the braising liquid into each foil packet. Tilt the baking sheet in order to equally distribute the braising liquid. Braise the ribs in the oven for 2 1/2 hours.
Transfer the braising liquid into a medium sausce pot. Bring the liquid to a simmer and reduce by or until of a thick syrub consistency. Brush the glaze onto the ribs. Place under the broiler just until the glaze caramelizes lightly. Slice each slab into 2 rib bone portions. Place the remaining hot glase into a bowl and toss the rib portions in the glaze.