Peel and slice carrots. Cook, covered, in a small amount of water over medium heat until tender. Drain.
In a medium size skillet, melt butter over medium-high heat. Sauté onions in butter until tender. Stir in flour, salt, pepper and sugar; cook for 1 minute. Gradually add milk, stirring constantly until mixture thickens and starts to boil. Pour over cooked carrots and stir to coat.
Servings: 4 to 6