
These stuffed mushroom caps take plain fungi and turn them into a fancy starter that gets grabbed fast at any party. The mix of sweet lobster, soft crab and tasty cheese makes a perfect bite that vanishes from plates in no time flat.
I first made these for a party on December 31st when I wanted something fancy but not too tricky. Folks were asking me how to make them before the clock even hit midnight.
Ingredients
- Baby Bella mushroom caps: They make the best little holders with their rich taste and they stay firm when you stuff them
- Maine lobster tail: Adds that fancy touch that makes these way better than regular stuffed mushrooms
- Lump crab meat: Gives a gentle sweetness and nice big pieces throughout your filling
- Crab claw meat: Puts in extra bite and seafood goodness alongside the lobster
- Finely chopped garlic: Adds that amazing smell that goes so well with seafood
- Green onions: Give a light onion kick and some bright green color
- Shallots: Add a bit of sweetness that works with the seafood instead of taking over
- Mozzarella cheese: Makes that awesome stretchy pull when you take a hot bite
- Monterey and Colby Jack cheeses: Bring some sharpness to match up with the rich seafood
- Boursin cheese: Puts in a creamy herby flavor that ties everything together
- Panko bread crumbs: Give that nice light crunch that stays crispy
- Paprika: Adds a bit of warmth and pretty color on top
- Cajun seasoning: Gives some depth and a tiny kick that wakes up the filling
- Melted butter: Holds everything together and makes every bite taste rich
Step-by-Step Instructions
- Preparation and Cleaning:
- Set your oven to 375°F for the best cooking. Wipe mushrooms with a slightly wet paper towel but don't get them too wet since they soak up water like a sponge. Take out the stems by giving them a twist at the bottom to make space for your filling. Cover your baking sheet with melted butter to stop sticking and give the mushroom bottoms more flavor.
- Creating the Filling:
- Mix the panko with melted butter in a bowl until all crumbs get wet. This helps everything stick together nicely. Put in your chopped up lobster and crab so it's spread out evenly. Add the garlic and onions which smell great but won't overpower your fancy seafood. Mix in your shredded cheeses but save a bit of mozzarella for the top. Shake in paprika and Cajun seasoning to your taste - more if you like it spicy, less if you don't.
- Filling and Baking:
- Put mushroom caps on your buttery tray with the open side facing up. Take a little spoon and pack each mushroom with filling, letting it stack up a bit on top. Push down gently so it sticks but don't squish it too hard. Cook for 10 to 15 minutes until tops look golden and cheese starts bubbling at the edges. For an extra nice finish, sprinkle that saved mozzarella on top and broil for 2 to 3 minutes until cheese gets bubbly and a little brown on top.

Lobster really makes this dish special. I found this out by chance when I didn't have enough crab one holiday and threw in some lobster. My father in law usually stays away from seafood but couldn't stop eating these and asked me to make them again for his birthday the next month.
Make Ahead Options
You can fix these mushrooms up to a day before your party to cut down on stress. Just do everything except the baking, wrap them tight with plastic, and stick them in the fridge. Take them out half an hour before cooking so they warm up a bit for even baking. You might need to cook them 2 or 3 minutes longer if they're still cold. You can also make just the filling up to two days ahead and keep it in the fridge, then stuff your mushrooms right before company shows up.
Perfect Pairings
These fancy stuffed mushrooms go great with bubbly drinks like Prosecco or Champagne that cut through the richness but still work with the delicate seafood taste. If you're putting out a whole spread of finger foods, serve these with lighter stuff like bruschetta or fresh veggies to balance things out. They also work really well as a starter before seafood pasta or grilled fish to keep that elegant seafood theme going. For more casual get-togethers, try them next to a simple green salad with a light lemony dressing.
Economical Alternatives
While lobster and lump crab make these super fancy, you can still make them taste great on a budget. Try using just crab meat or swap in some chopped cooked shrimp for a similar sweet taste that costs less. Fake crab can work if you're really watching pennies, but it won't taste or feel the same. Keep an eye out for seafood sales around Christmas and New Year's when stores often drop prices. Buying seafood when it's on sale and freezing it lets you enjoy this special treat without spending too much.

These lobster and crab stuffed mushrooms mix fancy with easy, and they'll be the first thing to disappear at your next party.
Frequently Asked Questions
- → Can I make these mushrooms before my guests arrive?
For sure! You can get the mushrooms and filling ready up to a day ahead. Just keep them covered in the fridge, then pop them in the oven when you're ready to eat. You might need to cook them a few minutes longer if they're cold from the fridge.
- → What can I use instead of lobster?
If you can't find lobster, just use all crab or try some cooked shrimp. Want to save money? Fake crab (surimi) works too, but won't taste as fancy.
- → What goes well with these mushrooms?
These stuffed mushrooms are great on their own as a starter, but they're also nice with a simple salad, some crusty bread, or a glass of cold white wine. Want to make it a meal? Serve them with grilled fish or a simple pasta dish.
- → Can I freeze these stuffed mushrooms?
You bet! Make them completely but don't bake them. Freeze them on a tray until they're hard, then put them in an airtight container for up to 3 months. When you want to eat them, bake from frozen and add about 5-7 minutes to the cooking time.
- → What's the best way to clean mushrooms?
Just wipe them gently with a damp paper towel to get rid of dirt. Don't soak mushrooms in water because they soak it up like a sponge and will turn soggy when you bake them.
- → Can I try different mushrooms?
Sure thing! Baby bellas (cremini) are great because of their size and flavor, but white button mushrooms work for a milder taste. Big portobello mushrooms make awesome individual servings - just add more filling and cook them a bit longer.