Place carrots in a medium saucepan and cover with water. Add salt. Cook about 40 minutes or until very soft.
When carrots are soft, drain. Add carrots to a large bowl and mash with a potato masher until smooth. As an alternative, puree carrots in a food processor.
Add remaining ingredients and whisk until smooth.
Pour mixture into a buttered 9 inch round baking dish, or similar size.
Bake in a 350 degree preheated oven for 40 minutes or until set.
Dust with powdered sugar before serving.