Why You’ll Love This Lobster-Stuffed Portobello Mushrooms
Hey there, food lovers! Are you looking for an appetizer that’s both stunning and surprisingly easy to make? Look no further! These decadent Lobster-Stuffed Portobello Mushrooms are your answer. Imagine sinking your teeth into a tender, earthy portobello mushroom cap, brimming with succulent lobster meat in a creamy, dreamy filling. The taste is an absolute symphony – the sweetness of the lobster perfectly balanced by the richness of the Gruyère and the subtle spice of Old Bay. The texture? A delightful contrast between the tender lobster, the melt-in-your-mouth cheese, and the satisfyingly firm mushroom.
What sets this recipe apart is its elegance without the fuss. It’s perfect for impressing guests at a dinner party or a special occasion, but it’s also simple enough for a weeknight treat. You won’t believe how quickly these come together – from prep to oven, you’re looking at about 30 minutes of hands-on time, leaving you more time to relax and enjoy your company (or a glass of chilled white wine!). The beautiful presentation adds that extra touch of sophistication, making it a real showstopper. So, get ready to tantalize your taste buds and elevate your appetizer game with this incredible recipe.

What You’ll Need
This recipe calls for simple, yet high-quality ingredients to ensure maximum flavor and enjoyment. Here’s what you’ll need to gather:
- 4 large Portobello mushrooms: Choose mushrooms with wide, deep caps for the best stuffing capacity. Look for ones that are firm and free of blemishes.
- 1 lb lobster meat, chopped: Fresh or frozen lobster meat works well. If using frozen, make sure it’s fully thawed and patted dry before using to prevent a watery filling.
- 1/2 cup breadcrumbs: Panko breadcrumbs create a lighter, crispier topping, but regular breadcrumbs work just fine too.
- 1/4 cup mayonnaise: Adds creaminess and richness to the lobster filling. Use your favorite brand.
- 2 tbsp lemon juice: Freshly squeezed lemon juice brightens the flavors and adds a touch of acidity to cut through the richness.
- 1 tsp Old Bay seasoning: This classic seafood seasoning provides a warm, slightly spicy flavor that complements the lobster beautifully.
- 1/4 cup shredded Gruyère: Its nutty, slightly sharp flavor pairs perfectly with the lobster and adds a beautiful golden brown crust.
- 2 tbsp chopped chives: Adds a fresh, herbaceous note and a pop of vibrant green color to the finished dish.
Step-by-Step Instructions
Let’s get cooking! Follow these simple steps to create your masterpiece:
- Preheat and Prep: Preheat your oven to 375°F (190°C). Gently clean the portobello mushrooms with a damp cloth or paper towel. Remove the stems and gently scrape out any dark gills from the caps. Tip: Reserve the stems for another use – they can be finely chopped and added to soups or stews!
- Prepare the Lobster Filling: In a medium bowl, combine the chopped lobster meat, breadcrumbs, mayonnaise, lemon juice, Old Bay seasoning, and half of the shredded Gruyère cheese. Mix gently until everything is evenly combined. Don’t overmix – you want the lobster to retain some texture.
- Stuff the Mushrooms: Spoon the lobster mixture generously into each portobello mushroom cap, piling it high. Tip: If you have any extra filling, you can bake it in a small oven-safe dish alongside the mushrooms.
- Bake to Perfection: Place the stuffed mushrooms on a baking sheet lined with parchment paper. Sprinkle the remaining Gruyère cheese over the tops. Bake for 20-25 minutes, or until the mushrooms are tender and the cheese is melted and golden brown. Tip: Keep a close eye on them during the last few minutes of baking to prevent the cheese from burning.
- Garnish and Serve: Once baked, remove the mushrooms from the oven and let them cool slightly before garnishing with the chopped chives. Serve immediately and enjoy! Tip: A drizzle of extra lemon juice or a sprinkle of fresh parsley adds a beautiful finishing touch.
Tips for Success
Here are a few tips to ensure your Lobster-Stuffed Portobello Mushrooms turn out perfectly:
- Don’t overstuff the mushrooms: Overfilling can prevent them from cooking evenly and may cause the filling to spill over.
- Use fresh ingredients: Fresh lobster meat and herbs will significantly enhance the flavor of the dish.
- Adjust the seasoning: Taste the lobster filling before stuffing the mushrooms and adjust the seasoning to your liking. You might prefer more or less Old Bay, depending on your spice preference.
- Don’t overcrowd the baking sheet: Allow adequate space between the mushrooms for even baking. If necessary, bake them in batches.
- Check for doneness: The mushrooms are done when they are tender and the filling is heated through. The cooking time may vary slightly depending on the size of your mushrooms and your oven.

Variations to Try
Feeling creative? Here are some fun ways to put your own spin on this recipe:
- Spicy Kick: Add a pinch of red pepper flakes to the lobster filling for a little heat.
- Herby Delight: Incorporate finely chopped fresh parsley, dill, or tarragon into the filling for extra flavor and aroma.
- Cheese Swap: Experiment with different cheeses like Parmesan, Asiago, or Fontina.
- Vegetarian Option: Substitute the lobster with artichoke hearts, crab meat, or a mixture of sautéed vegetables.
- Gluten-Free: Use gluten-free breadcrumbs to make this recipe suitable for those with gluten sensitivities.
Storing and Reheating
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, you can either microwave them for 1-2 minutes or bake them in a preheated oven at 350°F (175°C) for about 10 minutes, until heated through. For best results, reheat gently to avoid drying out the filling. Freezing these is not recommended as the texture of the lobster might be affected.
Frequently Asked Questions
Here are answers to some common questions about this recipe:
- Q: Can I use pre-cooked lobster meat? A: Yes, pre-cooked lobster meat is perfectly fine to use. Just make sure it’s fully thawed and patted dry before adding it to the filling.
- Q: How long do the stuffed mushrooms last in the refrigerator? A: They should be stored in an airtight container and consumed within 3 days for optimal freshness and flavor.
- Q: Can I use different types of mushrooms? A: While Portobellos are ideal for their size and texture, you can experiment with other large mushroom caps, but the cooking time may need adjustment.
- Q: What can I do with leftover lobster filling? A: If you happen to have extra filling, you can use it as a delicious spread on crackers or baguette slices, or add it to pasta or risotto.
The Final Word
These Decadent Lobster-Stuffed Portobello Mushrooms are the epitome of easy elegance. With their rich lobster filling, creamy texture, and beautiful presentation, they’re sure to be a hit at any gathering. The combination of flavors and textures is simply divine, and the quick preparation time makes this recipe a winner for busy weeknights or special occasions. Give it a try and let me know what you think in the comments below! Don’t forget to rate the recipe and share your culinary creations with me. Happy cooking!

Lobster-Stuffed Portobello Mushrooms 🦞🍄
Ingredients
- * 4 large Portobello mushrooms
- * 1 lb lobster meat chopped
- * 1/2 cup breadcrumbs
- * 1/4 cup mayonnaise
- * 2 tbsp lemon juice
- * 1 tsp Old Bay seasoning
- * 1/4 cup shredded Gruyère cheese
- * 2 tbsp chopped chives
- * 2 tbsp butter
- * 1 clove garlic minced
- * Salt and freshly ground black pepper to taste
- * 2 tbsp olive oil
Instructions
- Preheat oven to 375°F (190°C). Remove stems from Portobello mushrooms and gently scrape out any dark gills with a spoon. Brush the mushroom caps with 1 tbsp olive oil and season with salt and pepper.
- In a medium bowl, melt 2 tbsp butter in a pan over medium heat. Add minced garlic and sauté for 30 seconds until fragrant. Stir in the chopped lobster meat and cook for 2-3 minutes, until heated through.
- Add the mayonnaise, lemon juice, Old Bay seasoning, and breadcrumbs to the lobster mixture. Stir to combine until well blended. Season with salt and pepper to taste.
- Spoon the lobster stuffing generously into each Portobello mushroom cap.
- Sprinkle the shredded Gruyère cheese evenly over the stuffed mushrooms.
- Place the stuffed mushrooms on a baking sheet lined with parchment paper. Drizzle the remaining 1 tbsp olive oil over the mushrooms.
- Bake for 15-20 minutes, or until the mushrooms are tender and the cheese is melted and golden brown.
- Garnish with chopped chives before serving.