Cheesy Mushroom and Kale Brioche Strata Recipe
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Because the bread is cooked in an egg custard, strata is frequently served as a breakfast or brunch dish (much like a breakfast casserole). Instead this hearty, savory and cheesy bread pudding and stuffing hybrid version can take the place of traditional holiday stuffing or be served as a side for dinner. In this strata recipe, chunks of brioche bread are tossed with pancetta, sautéed mushrooms, and kale then combined with an egg mixture and topped with an abundance of funky Gruyère cheese.
Cheesy Mushroom and Kale Brioche Strata Recipe
Table of contents
Why Use Stale Bread?
Strata and bread pudding recipes usually call for the use of stale bread. Why? Bread that has been dried of most of its moisture will hold up when soaked in the egg mixture. Instead of turning to complete mush it will keep some of its texture.
Have you waited until the last minute to plan the menu and only have a fresh loaf of bread? If it’s the day before, just slice and leave the bread on the counter. If it’s hours before the dish should be assembled, cut the bread into cubes and spread on a baking sheet. Heat the oven to 300º and bake dry for about 10 – 15 minutes.
Key Ingredients in This Recipe
- Mushrooms – I typically use cremini also known as baby Bella mushrooms when I cook. They have a meatier, earthier mushroom flavor compared to white mushrooms. I recommend buying whole mushrooms and slicing them yourself so they are more evenly cut than pre-cut mushrooms. Use a damp paper towel to wipe away dirt before slicing the mushrooms.
- Kale – I use Tuscan kale in this recipe though curly kale or another hearty green like Swiss chard or mustard greens can be used in its place.
- Brioche – Brioche is an eggy, rich bread. They’re a bit sweeter than other breads and are great for absorbing the flavorful custard of the strata.
- Pancetta – Pancetta comes from pork belly and is salted, seasoned, cured and aged for an extended period of time. Pancetta is similar to bacon in flavor though not as smokey.
- Gruyère cheese – Gruyère is a hard cheese with a nutty, sweet flavor from Switzerland. The fact that it melts well (due to a high water to oil ratio) mixed with t’s distinct flavor makes it the perfect addition to anything from sandwiches to mac and cheese or fondue. If you can’t find Gruyère, I recommend substituting with another Swiss cheese like Emmental or another favorite semi-hard cheese that can easily be grated.
How to Make This Strata Recipe
- Cook the pancetta. Add the pancetta to a medium sauté pan and heat over medium heat, stirring occasionally until crispy and fat has rendered in the pan, about 8 minutes. Remove the pancetta from the pan to a large mixing bowl, reserving as much fat in the pan as possible.
- Cook the mushrooms. Return the pan to heat, add the butter and allow to melt then add the garlic and mushrooms, sautéing until golden brown, about 6 minutes. Season with salt and pepper and add to the bowl with the pancetta. Toss together with the kale and bread.
- Combine the mixture. Preheat oven to 350ºF (180ºC). In a medium mixing bowl whisk together the eggs, milk, heavy cream, nutmeg and cayenne then pour over the bread mixture, using hands to completely coat everything in the bowl.
- Assemble the strata. Pour the mixture into a 9″ x 12″ (23cm x 30cm) greased baking dish or 10-inch (25cm) cast iron skillet and top with the cheese.
- Bake the strata. Cover the dish with foil and bake for 30 minutes. Uncover and continue baking until the cheese is golden brown and the mixture is puffed in the middle and set, about an additional 20 minutes.
Tips and Tricks for This Recipe
Swaps and Substitutions
- The kale can easily swapped for another leafy green like chard, collard greens, mustard greens or even spinach.
- While I love the subtle, salty pork flavor of the pancetta, cooked Italian sausage can be used instead.
- Diced yellow onions or shallots can also be sautéed added to the strata recipe if desired.
- Based on preference or availability another semi-hard cheese that can be shredded like Gouda, Cheddar cheese can easily be used.
How to Prep this Recipe in Advance
These types of recipes are my favorite for entertaining because it eliminates so much of the stress from hosting. The dish is just popped in the oven and time is freed up for other duties. To make holiday prep easier, the strata mixture can be assembled a day ahead of time, then covered and refrigerated until baking.
Other Recipes to Try
If you enjoy this cheesy mushroom and kale brioche strata recipe, I recommend checking out some of these:
Cheesy Mushroom and Kale Brioche Strata Recipe
Ingredients:
- ½ cup diced pancetta
- 2 tablespoons unsalted butter, plus more for baking
- 3 cloves garlic, chopped
- 6 ounces crimini mushrooms, quartered
- Kosher salt, as needed
- Freshly ground black pepper, as needed
- 2 packed cups chopped Tuscan kale,
- 1 pound leftover brioche bread, cut into 2-inch pieces
- 5 eggs
- 1½ cups whole milk
- ½ cup heavy cream
- ¼ teaspoon nutmeg
- ¼ teaspoon cayenne
- 1 cup shredded Gruyère cheese
Instructions:
- Add the pancetta to a medium sauté pan and heat over medium heat, stirring occasionally until crispy and fat has rendered in the pan, about 8 minutes. Remove the pancetta from the pan to a large mixing bowl, reserving as much fat in the pan as possible.
- Return the pan to heat, add the butter and allow to melt then add the garlic and mushrooms, sautéing until golden brown, about 6 minutes. Season with salt and pepper and add to the bowl with the pancetta. Toss together with the kale and bread.
- Preheat oven to 350ºF (180ºC). In a medium mixing bowl whisk together the eggs, milk, heavy cream, nutmeg and cayenne then pour over the bread mixture, using hands to completely coat everything in the bowl.
- Pour the mixture into a 9" x 12" (23cm x 30cm) greased baking dish or 10-inch (25cm) cast iron skillet and top with the cheese.
- Cover the dish with foil and bake for 30 minutes. Uncover and continue baking until the cheese is golden brown and the mixture is puffed in the middle and set, about an additional 20 minutes.
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