Melt a stick of butter, add a quarter cup plain flour, and cook over medium heat, stirring until the bubbling subsides Whisk in a pint of whole milk and cook over low heat until thickened and smooth.
Stir in two cups fresh leaf spinach and a half-pound sauteed mushrooms. Artichokes are a nice option. Add white pepper and salt to taste. Prepare a pound of picked lump crab meat by heating with butter, lemon juice, and a little black pepper. Add to sauce.
Spoon over toast, top with egg.
