Ingredients

  • FILLING
  • Hard boil 12 eggs; cool and chop them
  • Dice 2 cups black forest ham
  • 2-1/2 cups coarsely torn day old bread (I have used day old croissants, too)
  • 1 cup shredded Gruyere cheese
  • 6 tablespoons unsalted butter
  • 1/3 cup flour
  • 2 cups milk
  • 1 tablespoon fresh lemon juice
  • 1/2 cup mayonnaise - the good stuff
  • 2 teaspoons Dijon mustard
  • 1/2 teaspoon garlic powder
  • 1 teaspoon dried tarragon
  • Cayenne pepper

Method

  • Butter a 9 x 13-inch baking dish. Add the eggs, bread and ham to the baking dish. Set aside.
  • Melt the butter in a saucepan over medium-high heat. Stir in the flour and cook until mixture foams.
  • Whisk in milk and cook until sauce thickens; remove from the heat.
  • Stir in lemon juice, mayonnaise, mustard, garlic powder, and tarragon.
  • Season with cayenne - to your taste. If needed, salt, however, the ham and cheese is usually salty enough.
  • Pour the sauce over the top of the casserole. Top with the cheese. Cool, cover and refrigerate overnight.
  • The next morning: take out the dish to sit at room temperature for a little bit; then bake at 350 degrees for about 35 minutes or until bubbly.
  • Note: My technique written above has been changed slightly since it was originally posted.