This takes a little time, but is so worth the effort!
2 Racks (5#) baby back ribs
6 tsp fresh rosemary, chopped, divided
2 1/2 tsp klosher salt, divided
2 1/2 tsp minced garlic, divided
1 1/2 tsp red pepper flakes, divided
12 oz orange marmalade
1 Tbls cider vinegar
Preheat the oven to 400 F. Place rack in lower third of the oven. In a small bowl combine 4 tsp Rosemary, 2 tsp salt, 2 tsp garlic and 1 tsp pepperflakes. Set aside.
Rinse ribs, pat dry. Place on heavy duty aluminum foil and rub with combined seasonings; wrap foil tightly around ribs and place on a baking sheet. Roast 1 1/2 - 2 hours, until tender.
In a small bowl whisk marmalade, vinegar and remaining seasonings. Cover and set aside.
Heat grill to medium high. Brush Ribs w/glaze. Remove from foil* and grill until golden brown.
As you can see from the picture, I elected to just open the foil and grill the ribs that way. They were very tender and I was concerned they would fall apart on the grill. The ribs browned just as nicely, and I think it helped retain the moisture.