How do I follow a recipe if my oven doesn't go as high as the recipe states?
How much longer depends on the type of bread, the size and the shape of the loaf. The solution I suggest is to obtain a probe-type thermometer (like a meat thermometer) and use that to determine if your bread has baked for a sufficiet time. Many breads are completely baked at around 195F(90C) though I have seen a couple of recipes that call for 205F(96C)