Peal-off and clean the carrots and sweet potato(es), then cook them (preferably steamed, for example with a pressure cooker as explained here). Mash them when they are cooked.
The mashed carrots and sweet potatoes can be completed with grated cheese (thus adding a dairy product), and fried eggs, meat or fish.
The same can be done with steamed Pumpkin Likes, or replacing sweet potatoes by regular potatoes. Note that sweet potato is a starchy vegetable, but a little less caloric than potatoes, and it contain valuable nutrients such as the Carrotene and Beta Carrotene Antioxidants.