GRUYÈRE CHEESE, SPINACH, AND MUSHROOM BREAKFAST CASSEROLE

In this day and age, if I don’t know all of the people coming to our home for a JazzVox pre-concert meal, having a vegetarian main dish option always makes me feel more comfortable. I simply can not stand having anyone feel like they are being left out. So as much as possible I make certain that there are at least several dishes that everyone can enjoy. Ok, I don’t go so far as to plan the menu around someone who only eats vegan. My efforts only extends so far. But if I know ahead of time that someone is gluten intolerant, or can’t eat nuts, I make certain that they won’t go hungry or feel deprived.

So for our last JazzVox concert for hosts and regulars, I decided to serve brunch. And because breakfast casseroles are so easy to prepare and must be made ahead of time, why would I serve anything else? My only problem was that in my repertoire of breakfast casseroles, none were vegetarian. So I did what I always do in cases like this – I stole borrowed someone else’s perfectly wonderful recipe. So this is my take on a recipe I found on the Food Network. A couple minor changes here and there, but who’s counting?  

So for a memorable Christmas breakfast this year, prepare this casserole a couple days ahead. Then fry up some sausages or bacon ahead of time and build some cinnamon rolls ahead and freeze them. Then Christmas morning all you have to do is turn on the oven and prepare a simple fresh fruit salad (dressed only with a tiny bit of vanilla Greek yogurt and brown sugar), and combine some orange juice and sparkling wine or Champagne together for a lovely mimosa for all the adults at table. I mean really, what a way to celebrate Christmas morning!  

You know, none of us know what will happen in the immediate future, so go for the gusto while you may. You will never regret that you created too many wonderful and memorable occasions for your family and friends. Or that you always served them wonderful food.

Love comes in all forms. And showing your feelings and love through good food to me is an essential part of that equation. As a very wise woman once told me – the best way to live a happy and fulfilling life is to always treat your family as friends, and your friends as family. And since I have always loved good food, I figure that good food is also of equal importance to everyone I feed. Thus, I have always tried to provide food that is as appetizing and nutritious as possible. Sometimes I succeed better than others, but my intentions are always to provide the tastiest and most wholesome food possible. You know the old aphorism – “she wasn’t good, but she had good intentions”. Well that was written for me when it comes to the kitchen. Some dishes just turn out better than others. But my intentions are always honorable!)

Happy holiday to all my readers in this most delicious of seasons.

For my other breakfast casserole recipes, see Italian Sausage, Mushroom, Cheese, and Egg Casserole, Roasted Potato, Ham, and Sharp Cheddar Cheese Breakfast Casserole, and Pancetta and Gruyère Breakfast Casserole.  

 

  • 4 T. extra-virgin olive oil, divided, plus more for greasing the dish
  • 8 c. cubed sourdough bread (crust removed, cut into 1-inch cubes)
  • kosher salt
  • freshly ground black pepper
  • 10 oz. button mushrooms, sliced (about 4 cups)
  • 2 cloves garlic, minced  
  • 1 tsp. fresh thyme leaves, roughly chopped
  • 5 oz. fresh baby spinach (about 5 cups)
  • 2 c. grated Gruyère cheese (use imported Gruyère, if possible)
  • 1/3 c. grated Parmesan
  • 8 lg. eggs, room temp.
  • 2½ c. half-and-half

Toss the bread cubes with 2 tablespoons of the oil, ¼ teaspoon salt, and a few grinds of pepper in a large bowl. Heat a large skillet over medium heat. Add the bread to the skillet, and cook, tossing occasionally, until toasted and hard, about 8-10 minutes. Return the toasted bread to the bowl to cool.

Wipe out the skillet. Heat the remaining 2 tablespoons oil over medium-high heat. Add the mushrooms and cook until they start to brown. Add the garlic, thyme, another ¼ teaspoon salt, and more pepper; stir continuously for 1 minute, then fold in the spinach. Continue to cook until the spinach is wilted, 1 to 2 minutes. Remove from the heat.

Place half the bread cubes in a lightly greased 9×13-inch glass baking dish or 3 qt. casserole dish. Sprinkle with half of the Gruyère and Parmesan. Add all of the mushroom-spinach mixture in an even layer. Top with the remaining bread cubes, Gruyère, and Parmesan.

In a large bowl, whisk together the eggs, half-and-half, ½ teaspoon salt and several grinds of pepper. Pour the egg mixture over the other ingredients. Cover with plastic wrap, and refrigerate for at least 6 hours up to 2 days. Remove the casserole from the refrigerator 30 minutes before baking.

Bake the casserole in a preheated 350 degree oven until the custard is set and the top is golden brown, 50 to 55 minutes. Cool for at least 15 minutes before serving warm or at room temperature.

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