Grandma’s Christmas Morning Quiche
When I was a child, every Christmas morning we would wake up early, open the presents that Santa left, and then make the drive to see grandma and grandpa and get more presents. As a kid, presents were great, but as an adult, my memories of Christmas morning are of the delicious quiche grandma made for everyone. Only when I became an adult did I realize how much effort made. She must have spent hours in the kitchen. She’s been gone for over two decades, but I can still feel her presence every time I make a quiche, because the only time I had quiche as a kid was when she made it for Christmas morning.
Ingredients
8 large eggs
1 ¼ cups heavy cream
¾ cup whole milk
1 ½ cups shredded Gruyère or Swiss cheese
½ cup sharp white cheddar cheese
6 slices bacon, cooked and crumbled
½ pound breakfast sausage
8 ounces mushrooms, sliced
1 large yellow onion, thinly sliced
2 tablespoons butter
½ teaspoon garlic powder
½ teaspoon dry mustard
¾ teaspoon kosher salt
½ teaspoon black pepper
Pinch of nutmeg
Instructions
1. Caramelize the onions
Melt butter in a large skillet over medium-low heat.
Add onions and cook slowly for 20–25 minutes until deeply golden, soft, and sweet.
Remove from skillet.
2. Cook the fillings
In the same pan:
Cook sausage until browned.
Add mushrooms and cook until their moisture cooks away.
Stir in crumbled bacon.
Let everything cool slightly.
3. Prepare the custard
Preheat oven to 350°F.
Grease a deep 9-inch pie plate or quiche dish well.
In a large bowl whisk together:
eggs
heavy cream
milk
garlic powder
dry mustard
salt
pepper
nutmeg
4. Assemble
Spread onions, mushrooms, sausage, and bacon evenly into the dish.
Top with both cheeses.
Pour egg mixture slowly over everything.
5. Bake
Bake 45–55 minutes until:
center is just set
top is golden brown
edges puff slightly
Let rest 15 minutes before slicing.
That resting time gives the quiche its perfect creamy texture.
Why This Tastes So Special
The caramelized onions are beautifully sweet and rich, the mushrooms add earthy richness, and the bacon and sausage make every bite savory and comforting. Gruyère melts beautifully into the custard filling, giving the quiche a classic cozy holiday flavor that will make your kids remember Christmas breakfast for decades to come. But also, it’s amazing for every other day of the year, too!