Meanwhile, when the carrots are finished roasting, take them out to cool for a little bit. When they are cool enough to handle, take them out of the pan and add them to the cooked masoor dal. Take the pot of dal and carrots off the stove and set it on a potholder. If you have an immersion blender than you can immediately blend the mixture until creamy. If you have a regular blender, wait a bit until the mixture has cooled. When it is cooled down, blend the mixture in batches and pour back into the pot.