These tender baby back ribs are cooked in a pressure cooker and finished under the broiler for a fast approach to classic barbecue. Using just five ingredients, the recipe relies on a savory broth mixture to infuse the meat with flavor before a final coating of sweet and spicy sauce. The quick broil at the end creates sticky, caramelized edges that mimic hours on a grill. Serve this easy main course for a casual weekend cookout or a surprisingly simple weeknight dinner.