In saucepan melt butter. Stir in flour, the 0.125 tsp. salt and the dash pepper. Add half cup milk, cook and stir til thickened and bubbly. Pour over vegies; top with meatballs. Bake, covered, at 180ÂșC or 30 minutes. Uncover, bake 10 minutes longer. Sprinkle with paprika.