Yes, you can place the baby potatoes into the oven and roast them if you wish. The only advantage of doing so would be that you didn’t have to toss the baby potatoes in the frypan as often, and you can leave them to roast away in the oven. You will, however, still need to reduce the soy sauce braising sauce. You can add the roasted baby potatoes towards the end and allow it to caramelise, or just pour the sauce on top.