Heat oil in large heavy skillet over medium-high heat and brown ribs in batches, turning occasionally, about 5 minutes.
Remove ribs to roasting pan; cover pan with aluminum foil and bake 3 hours or until ribs are very tender.
Meanwhile to make glaze, puree poblano peppers, water, Knorr® Beef flavor Bouillon and garlic in food processor or blender until smooth. Combine pineapple jelly and poblano mixture in small saucepan and bring to a boil over medium-high heat. Reduce heat and simmer, stirring occasionally, until thick, about 10 minutes. Set aside.
Brush or spoon glaze over cooked ribs; bake an additional 10 minutes until glazed.