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The kids (and maybe their kids) are coming home for the holidays. It’s sure to be a nonstop whirlwind of activity. And oh yes, we’re now very adept at ordering takeout for dinner to make things easier, especially when there’s a crowd.

But what about breakfast?

Here at A Butler’s Manor, making breakfast for a crowd is literally our bread and butter, and we’ve got dozens of recipes that can be made in advance and popped into the oven in the morning. That means you can enjoy your coffee while the house fills up with the wonderful smells of breakfast and wakes all those sleeping guests to the anticipation of a scrumptious, filling start to the day.

Here is a savory option, fit for a crowd. I’ve written it to be prepared the day before, but it can also be cooked straight away with modifications indicated in brackets.




Prep Time: 20 Minutes
Cook Time: 48 Minutes
Total Time: 55 Minutes
Servings: 9-12


  • 1 large leek, white and light green part only, cleaned and chopped
  • 1 5 oz. bag seasoned croutons
  • 15 eggs
  • 2 cups milk
  • 4 cups grated Gruyere cheese (about 8-9 oz)
  • 4 oz. prosciutto, coarsely chopped


  1. [Cooking now? Preheat oven to 350.]

    Coat a 15” x 10” Pyrex dish with olive oil cooking spray.

  2. Steam leeks for 3-5 minutes; drain.

  3. Whisk together milk and eggs, add croutons and pour into prepared pan. [Cooking now? Let sit about 20 minutes to allow croutons to begin to absorb liquid.]

    Sprinkle leeks, cheese and chopped prosciutto and stir to combine. Cover with foil or cling wrap and refrigerate overnight.

    casserole of egg, cheese, gruyere, leek and prosciutto before baking

  4. The next morning, remove the baking dish from the refrigerator and allow to come to room temperature, about 30 minutes.

  5. Preheat oven to 350 degrees.

  6. Bake, uncovered, until golden brown, 30-40 minutes.

    Remove from oven and let rest approximately 5 minutes, then cut and serve.
    baked casserole of eggs, prosciutto, cheese and leeks

Recipe Cuisine: American

Recipe By: Kimberly Allen, A Butler's Manor Bed and Breakfast - December 14, 2020

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