Only carrots and potatoes

Since I am on a low fiber diet it is very difficult to choose what we will have for dinner. There is not so much food which is healthy but also contains no fibers. Normally healthy food contains a lot of fibers. To make sure that any fibers left in the food will be easy to digest I have to cook all the low fiber vegetables quite a long time. The taste will be gone and I don't like the food if it is cooked too much. I have to follow this diet because I will have to do an examination on Friday. I am following this diet for one week now and I really don't know what I can make for dinner this evening. Not much variety with only potatoes and carrots.