Baby back ribs are very tender ribs, so they do not need to be cooked long in the oven Cooking them for a long time, other than smoking, will just dry them out.
I also do not recommend boiling them in any type of liquid first. Doing this will only rob the meat of flavor and the texture will be all wrong. Well cooked ribs should have a little pull to them. Technically you don't want the meat to fall off the bone, the meat should pull cleanly off the bone with a little bit of resistance.
preheat your oven to 400 degrees
cook the ribs for 1 hour - serve immediatly