Baby Creamed Onions

3 pounds small white onions, peeled
6 tablespoons butter
3 cups milk
6 tablespoons flour
1 teaspoon salt
1/4 teaspoon pepper

Cook onions in boiled salted water for 20 minutes or until tender, drain and return to saucepan. While onions cook, melt butter over low heat. Blend in flour, salt and pepper. Cook, stirring constantly, just until bubbly. Stir in milk, continue cooking and stirring until sauce thickens and boils 1 minute. Pour over drained onions, heat slowly just until bubbly.