Maple-Balsamic Lamb Cutlets

I just came back from sydney and bought a packet of lamb cutlets from woolworths. It cost me aud 11 plus for 6 pcs. I dunno if it's cheaper than in s'pore, but i assumed that it was.
While searching for lamb recipes i came across Honey-Balsamic Lamb Chops courtesy of Giada De Laurentiis. I did some changes based on her recipe. I substituted Honey with Maple syrup, mainly bcoz i only have maple syrup at home.

Ingredients

6 pcs lamb cutlets
3 tbsp balsamic vinegar
1/2 clove of garlic, crushed
2 tbsp maple syrup
2 tbsp olive oil
1/2 tsp salt
cracked black pepper
2 sprigs of rosemary

1. To prepare marinade, mix vinegar, maple syrup, olive oil, salt & pepper in a bowl. Whisk the mixture until it becomes a thick sauce.
2. Place the lamb cutlets in a heat-proof dish, pour the marinade over them and make sure the cutlets are evenly coated with the marinade.
3. Sprinkle crushed garlic and rosemary over the cutlets.
4. Set aside for 20-30 mins. (It can be kept overnight)

5. Preheat the oven to 220 degrees.
Sear both sides of the cutlets on a pan over medium heat, approximately 2-3 mins on each side. (This is to retain the juice of the meat)
6. Place them back onto the heat-proof dish and pop them into the oven for approximately 10-15 mins or until cooked.
7. Dish out and serve with roasted potatoes and french beans.
8. Spoon the sauce over the lamb or serve the sauce on the side.