These rolls are made by rolling short pastry dough thin (0.5 cm/0.2 inch), cutting it in small squares (ca. 5 cm / 2 inches) and rolling a small log of turkish delight (1x1x4 cm, 0.5x0.5x1.5 inches) in the square, resulting in a cylinder filled with turkish delight. They are baked (the turkish delight melts to a honey-like viscosity in the oven, but usually doesn't flow out), left to cool, then confectioner's sugar is sifted over them. The turkish delight filling resolidifies somewhat after cooling, but not to its completely dry state from before baking. They are not supposed to cook hard and dry and brown, they are more like Russian tea cakes in texture.     The problem with this recipe is that more often than not, the pastry is underbaked in the middle. I think that the combination of a thick roll and getting soggy from the melted filling is responsible for the problem. However, I don't have a solution. Using less crust isn't an option - not only would the ratio of crust to filling be disturbed, but if there isn't substantial overlap in the cylinder walls, the melted lokum is likely to flow out during baking (I've had that happen). Blindbaking isn't an option - not only don't I have an idea how to hold the shape, but also the upper part of the crust will overbake during the real baking later. It is already baked at lowish temperatures, so I don't think that lowing it further will help.   Any ideas how to get well-baked rolls while keeping the nice gooey filling?  
If you soak your beans in brine (3tbsp table salt per gallon of water, or 1.5% salt by weight) it'll help soften the skins by replacing calcium and magnesium ions in the skin. After soaking for 8–24 hours, drain and rinse. (Source: Cooks Illustrated, login required). Harold McGee in On Food and Cooking also mentions this (p. 488–489) and suggests 1% salt by weight. McGee also mentions that 0.5% baking soda will further reduce cooking times (but may lead to unpleasant taste & mouth feel).  Alternatively, Cook's Illustrated also reports that dried kombu can be used to similar effect, without needing the soak.  Even after brining, taste them when nearly done cooking: you may need to add some salt—it doesn't always penetrate that far into the beans. At least, that's been my experience.  Quick summary:   Create 1–1.5% salt (by weight) brine, approx 3tbsp table salt per gallon of water. Sort (remove rocks, deformed and damaged beans, etc.) and rinse dried beans. Drain rinse water. Soak rinsed beans in brine for 8–24 hours. Beans will noticeably swell. Drain brine, rinse beans again. Cook beans normally. Towards the end of cooking, season to taste.   You want to season towards the end of the cooking because it results in creamier texture and also eating some beans which haven't been heated to boiling for 10 minutes is ill-advised due to phytohaemagglutinin. 