If your roasted Parmesan potatoes didn't get golden or crispy, it could be a few things. - The pan was too crowded and the potatoes steamed. If you are doubling the recipe, use two sheet pans. - The oven was not hot enough, resulting in soft but not crispy spuds. Use an internal oven thermometer to make sure your oven temp reading is correct. - The potatoes were wet from washing. This can also cause them to steam or become soggy, so start with really dry potatoes.