Kale Mushroom Strata has become my go-to for a reason – it’s a comforting and hearty make-ahead breakfast or brunch dish that feels incredibly special without being fussy. I first tried making a kale mushroom breakfast casserole years ago, hoping for something a little more exciting than scrambled eggs, and I was blown away by the earthy mushrooms, vibrant kale, and that melty Gruyère cheese all nestled within fluffy bread. The aroma that fills my kitchen as it bakes is simply divine, promising a delicious meal. Let’s get cooking!

Why You’ll Love This Kale Mushroom Strata
There are so many reasons this dish is a winner for your next brunch or breakfast. It’s a truly satisfying meal that everyone raves about.
- It’s incredibly flavorful, with the earthy mushrooms and slightly bitter kale balancing perfectly.
- The Gruyère cheese adds a wonderful nutty depth that makes this a savory kale and mushroom strata.
- It’s a fantastic make-ahead meal, saving you precious time on busy mornings.
- This is an easy kale mushroom strata that even beginner cooks can master.
- It’s a hearty and comforting dish that feels like a real treat.
- The combination of textures – soft bread, tender kale, and creamy cheese – is divine.
- It’s a versatile vegetarian option that satisfies even meat-eaters.
Ingredients for Kale Mushroom Strata
Gathering your ingredients is the first step to this delightful vegetarian kale mushroom strata. You’ll need the following:
- 1 loaf (1 pound) day-old French bread, cut into 1-inch cubes – Stale bread soaks up the custard beautifully.
- 1 pound mushrooms, sliced – Cremini or a mix of your favorites work best for that earthy flavor.
- 1 tablespoon olive oil – For sautéing the veggies.
- 1 cup chopped yellow onion – About one small onion, adds a sweet base.
- 2 cloves garlic, minced – For that essential aromatic kick.
- 5 ounces kale, chopped – Lacinato or curly kale works well; it wilts down nicely.
- 1 teaspoon salt – Enhances all the other flavors.
- 1/2 teaspoon black pepper – Freshly ground is always best.
- 1/4 teaspoon dried thyme – A classic pairing with mushrooms.
- 1/4 teaspoon nutmeg – Adds a subtle warmth that complements the cheese.
- 6 large eggs – These form the custard base, binding everything together.
- 3 cups milk – Whole milk provides the creamiest texture.
- 1/2 teaspoon dry mustard – Adds a little zip to the custard.
- 1/4 teaspoon cayenne pepper – Just a pinch for a hint of heat.
- 2 cups shredded Gruyère cheese – Its nutty, creamy melt is perfect.
- 1/2 cup grated Parmesan cheese – For a salty, sharp finish.
How to Make Kale Mushroom Strata
Follow these simple steps to create a truly delicious kale mushroom strata. The process is straightforward, and the results are incredibly rewarding, turning simple ingredients into a comforting mushroom and kale egg bake.
- Step 1: Begin by toasting your bread cubes. Arrange them in a single layer on a baking sheet. Bake in a preheated oven at 350°F (175°C) for about 10-15 minutes, or until they’re lightly golden and a bit firm. This ensures they won’t turn mushy when soaked.
- Step 2: While the bread toasts, heat 1 tablespoon olive oil in a large skillet over medium heat. Add the 1 pound sliced mushrooms and 1 cup chopped yellow onion. Cook, stirring occasionally, until the vegetables have softened, which usually takes about 5-7 minutes.
- Step 3: Now, add the 2 cloves minced garlic to the skillet and cook for just one minute more until you can smell its fragrant aroma. Be careful not to burn the garlic.
- Step 4: Stir in the 5 ounces chopped kale, 1 teaspoon salt, 1/2 teaspoon black pepper, 1/4 teaspoon dried thyme, and 1/4 teaspoon nutmeg. Continue to cook, stirring, until the kale has wilted down, which takes about 3-5 minutes. Then, remove the skillet from the heat.
- Step 5: In a large bowl, whisk together the 6 large eggs, 3 cups milk, 1/2 teaspoon dry mustard, and 1/4 teaspoon cayenne pepper until well combined.
- Step 6: Stir in the 2 cups shredded Gruyère cheese and 1/2 cup grated Parmesan cheese into the egg mixture.
- Step 7: Add the toasted bread cubes and the sautéed mushroom-kale mixture to the egg and cheese mixture. Gently toss everything together with a spatula or your hands, making sure all the bread cubes are well coated in the custard and veggies.
- Step 8: Pour this delightful mixture into a greased 9×13 inch baking dish.
- Step 9: Cover the dish tightly with plastic wrap or foil. Refrigerate for at least 1 hour, or ideally overnight. This chilling time is crucial for allowing the flavors to meld and the bread to fully absorb the rich custard, making this how to make kale mushroom strata guide truly effective.
- Step 10: When you’re ready to bake, preheat your oven to 350°F (175°C).
- Step 11: Bake the strata, uncovered, for 45-55 minutes. You’ll know it’s ready when the top is puffed up and beautifully golden brown, and a knife inserted into the center comes out clean.
- Step 12: Let the strata stand for about 10 minutes before slicing and serving. This allows it to set up properly.

Pro Tips for the Best Kale Mushroom Strata
Want to elevate your breakfast bake? These tips will ensure your kale mushroom strata is absolutely perfect every time, making it a standout dish.
- Use day-old bread! Fresh bread will absorb too much liquid and make the strata gummy. Toasting cubes until firm is key.
- Don’t overcook the kale. It should be wilted but still have a slight bite before going into the strata.
- Allow ample chilling time. Overnight is ideal for the flavors to meld and the bread to fully absorb the custard.
- Grate your own cheese. Pre-shredded cheeses often have anti-caking agents that can affect meltability.
What’s the secret to perfect Kale Mushroom Strata?
The secret to a perfect kale mushroom strata lies in the balance of textures and flavors, and proper custard absorption. Using day-old bread and letting it soak overnight is crucial for that custardy, melt-in-your-mouth quality that makes this the best kale mushroom strata recipe.
Can I make Kale Mushroom Strata ahead of time?
Absolutely! You can assemble the entire kale mushroom strata the night before. Just cover it tightly and store it in the refrigerator. This allows the bread to soak up all the delicious flavors before baking. For more information on making dishes ahead, check out our about me page for tips.
How do I avoid common mistakes with Kale Mushroom Strata?
A common pitfall is using fresh bread, leading to a mushy texture. Also, resist the urge to overmix the ingredients, as this can toughen the bread. Lastly, ensure even distribution of kale and mushrooms for consistent flavor in every bite. You can find more helpful cooking advice on our privacy policy page.
Best Ways to Serve Kale Mushroom Strata
This versatile kale mushroom strata for brunch pairs beautifully with a variety of sides. For a complete meal, I love serving it alongside some fresh fruit salad or a simple green salad with a light vinaigrette. The brightness of the fruit or the tang of the dressing cuts through the richness of the strata perfectly.
If you’re looking for something heartier, consider serving it with crispy bacon or a side of roasted potatoes. The combination of this savory strata with kale and mushrooms and these classic breakfast accompaniments creates a truly satisfying meal that’s perfect for weekend gatherings or a special holiday breakfast. For terms and conditions regarding recipes, please see our terms of use.

Nutrition Facts for Kale Mushroom Strata
Here’s a breakdown of the estimated nutritional information per serving for this delicious kale mushroom strata. It’s a hearty and satisfying dish, perfect for a special breakfast or brunch.
- Calories: Approx. 425
- Fat: Approx. 23g
- Saturated Fat: Approx. 11g
- Protein: Approx. 22g
- Carbohydrates: Approx. 38g
- Fiber: Approx. 4g
- Sugar: Approx. 6g
- Sodium: Approx. 900mg
Nutritional values are estimates and may vary based on specific ingredients used in your healthy kale mushroom strata. For information on data usage, please refer to our GDPR compliance page.
How to Store and Reheat Kale Mushroom Strata
Once your delicious kale mushroom strata has cooled slightly, storing leftovers is simple. This dish holds up wonderfully, making it a convenient option for meal prep. For immediate storage, place the cooled strata in an airtight container. You can keep it in the refrigerator for 3 to 4 days. This makes it easy to enjoy this comforting dish multiple times.
If you want to store it for longer, consider freezing it. After it has completely cooled, you can wrap individual portions or the entire mushroom strata casserole recipe tightly in plastic wrap, followed by a layer of aluminum foil. Properly stored, it can last in the freezer for up to 3 months. To reheat, thaw overnight in the refrigerator. Then, bake at 350°F (175°C) until heated through, about 20-30 minutes. You can also reheat individual slices in the microwave for a quick bite.
Frequently Asked Questions About Kale Mushroom Strata
What is kale mushroom strata?
A kale mushroom strata is essentially a savory bread pudding, often made ahead of time. It involves layering cubed bread with sautéed mushrooms, kale, cheese, and a rich egg-and-milk custard, then baking it until golden and puffed. It’s a hearty and comforting dish, perfect for breakfast or brunch.
Why make kale mushroom strata?
You should make this dish because it’s incredibly versatile and can be prepped the night before, saving you time on busy mornings. It’s packed with earthy flavors from the mushrooms and kale, balanced by the richness of cheese and custard. It’s a fantastic way to use up slightly stale bread and results in a delicious, satisfying meal that’s sure to impress.
Can I use fresh kale instead of chopped?
Yes, you can use fresh kale! The recipe calls for 5 ounces of chopped kale, which is roughly 3-4 cups loosely packed. If you’re using larger kale leaves, you might want to chop them a bit finer. Just ensure they are thoroughly washed and dried before chopping. The cooking time may vary slightly, but the kale should be tender.
What are some other cheese options for this kale mushroom strata recipe?
While Gruyère is fantastic, this kale mushroom strata recipe is very forgiving with cheeses. I’ve had great success with Swiss cheese, sharp cheddar, or even Monterey Jack. A combination of cheeses also works wonderfully to add complexity. Just aim for about 2.5 cups of shredded cheese total, ensuring it melts well.
Variations of Kale Mushroom Strata You Can Try
Looking to switch things up? This delightful kale mushroom strata is incredibly adaptable. Here are a few ideas to personalize your next bake:
- Add Protein: For a heartier, non-vegetarian version, try adding cooked crumbled bacon, sausage, or shredded chicken along with the mushrooms and kale.
- Go Green with Spinach: If kale isn’t your favorite, a spinach mushroom strata alternative is delicious. Simply substitute the kale with 5-6 ounces of fresh spinach, wilting it similarly in the skillet.
- Spice it Up: Kick up the flavor with a pinch of red pepper flakes added to the sautéed vegetables, or try different herbs like rosemary or sage alongside the thyme.
- Cheesy Layers: Experiment with different cheese combinations. A layered kale mushroom strata could include a layer of goat cheese or feta crumbled between the bread and vegetable mixture for an extra tangy kick.
Kale Mushroom Strata: Amazing 1-Dish Meal
- Total Time: 1 hour 20 minutes (plus optional overnight chilling)
- Yield: 8 servings 1x
- Diet: Vegetarian
Description
A comforting and hearty make-ahead breakfast or brunch dish featuring earthy mushrooms, vibrant kale, and melty Gruyère cheese nestled within fluffy bread. This kale mushroom strata recipe is easy to make and delicious.
Ingredients
- 1 loaf (1 pound) day-old French bread, cut into 1-inch cubes
- 1 pound mushrooms, sliced
- 1 tablespoon olive oil
- 1 cup chopped yellow onion
- 2 cloves garlic, minced
- 5 ounces kale, chopped
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/4 teaspoon dried thyme
- 1/4 teaspoon nutmeg
- 6 large eggs
- 3 cups milk
- 1/2 teaspoon dry mustard
- 1/4 teaspoon cayenne pepper
- 2 cups shredded Gruyère cheese
- 1/2 cup grated Parmesan cheese
Instructions
- Arrange bread cubes in a single layer on a baking sheet. Bake at 350°F (175°C) for 10-15 minutes, or until lightly toasted.
- While the bread toasts, heat olive oil in a large skillet over medium heat. Add mushrooms and onion, and cook until softened, about 5-7 minutes.
- Add garlic and cook for 1 minute more until fragrant.
- Stir in kale, salt, pepper, thyme, and nutmeg. Cook until kale is wilted, about 3-5 minutes. Remove from heat.
- In a large bowl, whisk together eggs, milk, dry mustard, and cayenne pepper.
- Stir in the Gruyère cheese and Parmesan cheese.
- Add the toasted bread cubes and the mushroom-kale mixture to the egg mixture. Gently toss to combine, ensuring the bread is well coated.
- Pour the mixture into a greased 9×13 inch baking dish.
- Cover and refrigerate for at least 1 hour, or preferably overnight, to allow the flavors to meld.
- Preheat oven to 350°F (175°C).
- Bake, uncovered, for 45-55 minutes, or until the strata is puffed up and golden brown, and a knife inserted into the center comes out clean.
- Let stand for 10 minutes before serving this delicious kale mushroom strata.
Notes
- For a richer flavor, you can use a combination of milk and half-and-half.
- Other cheeses like Swiss or cheddar can be substituted for Gruyère.
- If you don’t have day-old bread, you can toast fresh bread cubes for a longer period until they are firm.
- This kale mushroom strata can be assembled the day before baking.
- Ensure all ingredients are evenly distributed for the best kale and mushroom strata bake.
- Prep Time: 25 minutes
- Cook Time: 55 minutes
- Category: Breakfast/Brunch
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: Approx. 400-450
- Sugar: Approx. 5-7g
- Sodium: Approx. 800-1000mg
- Fat: Approx. 20-25g
- Saturated Fat: Approx. 10-12g
- Unsaturated Fat: Approx. 10-13g
- Trans Fat: 0g
- Carbohydrates: Approx. 35-40g
- Fiber: Approx. 3-5g
- Protein: Approx. 20-25g
- Cholesterol: Approx. 150-180mg