Sourdough Strata Recipe

Yield: servings

Prep Time: 30

Cook Time: 1 10

Chill Time: 1

Total Time: 2 40

Sourdough Strata is a flavorful dish featuring salty pork sausage, spinach, and Gruyere cheese layered over tangy sourdough bread soaked in a creamy custard mixture. This quick and impressive breakfast or brunch option is sure to please any crowd.

4.46 from 31 votes

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Equipment

Ingredients

8 cups sourdough bread 1-inch cubes
1 lb pork sausage
1 package frozen spinach thawed and drained
1 yellow onion diced, about 1 1/2 cups
3 cloves garlic minced
1 1/2 cups Gruyere cheese shredded
1/2 cup Parmesan cheese shredded
10 large eggs
2 3/4 cups half and half
2 Tablespoons dijon mustard
1 teaspoon thyme
1 1/2 teaspoons salt
1/2 teaspoon black pepper

Instructions

Heat a large skillet to medium heat. Cook the pork sausage until cooked through. Remove the breakfast sausage from the skillet.
1 lb pork sausage
Sauté the yellow onion in the remaining oil for 5-7 minutes, until translucent and soft. You may need to add extra olive oil.
1 yellow onion
Add the drained spinach and minced garlic. Saute for 2-3 minutes, or until the garlic is fragrant.
1 package frozen spinach, 3 cloves garlic
In a small bowl, mix the grated cheese and set aside.
1 1/2 cups Gruyere cheese, 1/2 cup Parmesan cheese
Place half of the sourdough cubes (4 cups) in a greased 12-inch cast iron skillet. Top with half the sautéed spinach mixture, half the cooked sausage, and then half of the grated cheese. Repeat with the layering, ending with the remaining cheese on the top of the strata.
You can also use a 9x13 baking dish.
8 cups sourdough bread
In a large bowl, whisk the eggs, half and half, Dijon mustard, thyme, salt, and black pepper, and mix until combined. Pour the custard mixture on top of the entire strata.
10 large eggs, 2 3/4 cups half and half, 2 Tablespoons dijon mustard, 1 teaspoon thyme, 1 1/2 teaspoons salt, 1/2 teaspoon black pepper
Cover the breakfast casserole with aluminum wrap and allow it to soak for at least one hour, overnight is best.
When ready to bake, preheat the oven to 325 degrees F. Bake the uncovered sourdough strata for 70-80 minutes until the center is cooked through and golden brown on top. Serve warm and enjoy!

Notes

This recipe card was updated on February 26th, 2026.

How to Store

Store leftover Sourdough Strata in an airtight container in the fridge for up to 3 days. Reheat in the microwave until warm.

Can I make this Sourdough Strata in advance?

Absolutely! The longer the crusty bread can soak up that delicious egg mixture, the better! I prefer to whip this Sourdough Strata the night before, 8-12 hours before I pop it into the oven the next day. It makes for a quick and easy breakfast/brunch idea, especially for holiday mornings, like Thanksgiving or Christmas.

Can I customize this Sourdough Strata recipe?

This Sourdough Strata recipe has limitless combinations! From adding spring onion, tender bell peppers, crispy bacon, aldante asparagus, or whatever, the possibilities for different flavors and endless. You could even bake this as a plain cheese strata and it would be delicious., I would stick with 2-3 of your favorite meats/veggies for the best flavor profile. Not a veggie fan? Add extra protein!

Nutrition

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