Crab-Stuffed Portobello Mushrooms with Chives

Why You’ll Love This Recipe

• Restaurant-level results with easy, home-cook steps.
• Bright lemon and herbs balance rich crab and cream cheese.
• Pre-roasted portobellos stay meaty, not watery.
• Golden, buttery panko-Parmesan crunch on top seals the deal.

Grocery List

• Produce: 6 large portobello caps, garlic, lemon, fresh parsley, fresh chives
• Dairy: Cream cheese, Parmesan, unsalted butter
• Pantry: Olive oil, panko breadcrumbs, mayonnaise, Dijon mustard, Worcestershire sauce, Old Bay seasoning, kosher salt, black pepper
• Seafood: Lump crab meat (12 oz)

Full Ingredients

For the Mushrooms

• 6 large portobello mushroom caps (4–5 inches), stems and dark gills removed
• 2 tbsp olive oil
• 1/2 tsp kosher salt

For the Crab Filling

• 12 oz (340 g) lump crab meat, drained well and picked over for shells
• 6 oz (170 g) cream cheese, softened
• 2 tbsp mayonnaise
• 1 tsp Dijon mustard
• 1 tsp Worcestershire sauce
• 1 tsp Old Bay seasoning
• 1 tsp finely grated lemon zest
• 1 tbsp fresh lemon juice
• 2 garlic cloves, finely minced
• 2 tbsp finely chopped fresh parsley
• 1/2 tsp kosher salt
• 1/4 tsp freshly ground black pepper

For the Crunchy Topping

• 1/2 cup panko breadcrumbs
• 1/3 cup finely grated Parmesan cheese
• 2 tbsp unsalted butter, melted
• Pinch paprika (optional, for color)

To Finish

• 2 tbsp finely chopped fresh chives
• Lemon wedges, for serving

Step-by-Step Instructions

Step 1: Heat the oven and prepare the pan

Preheat the oven to 400°F (200°C). Line a rimmed baking sheet with parchment for easy cleanup and set a wire rack on top if you have one. A rack allows airflow so the mushroom bottoms don’t steam.

Step 2: Prep the portobellos

Wipe the mushroom caps clean with a damp paper towel. Twist out the stems and use a spoon to gently scrape out the dark gills to make space for the filling. Brush the caps (inside and outside) with 2 tablespoons olive oil and sprinkle with 1/2 teaspoon kosher salt. Arrange gill-side up on the prepared pan.

Step 3: Pre-roast to drive off moisture

Bake the empty caps for 10 minutes. Carefully pour off any liquid that collects in the caps or on the pan. This step keeps the finished mushrooms meaty instead of soggy.

Step 4: Mix the crab filling

In a medium bowl, stir together the cream cheese, mayonnaise, Dijon, Worcestershire, Old Bay, lemon zest, lemon juice, garlic, parsley, salt, and pepper until smooth. Add the crab and fold very gently with a spatula to keep the lumps intact.

Step 5: Make the crunchy topping

In a small bowl, combine the panko, Parmesan, melted butter, and a pinch of paprika (if using). The mixture should feel lightly moistened and sandy.

Step 6: Fill, top, and bake

Divide the crab filling among the warm mushroom caps, mounding it neatly. Sprinkle each generously with the panko-Parmesan topping, pressing lightly so it adheres. Bake 12–15 minutes until the tops are golden and the filling is heated through. For extra color, broil 1–2 minutes, watching closely.

Step 7: Finish and serve

Transfer to a platter. Shower with chopped chives and add lemon wedges on the side. Serve hot so the centers are creamy and the tops stay crisp.

Pro Tips

• Drain the crab well and pat dry—excess moisture can make the filling loose.
• Fold the crab in gently to preserve those sweet, tender lumps.
• Pre-roasting the caps is key; it concentrates flavor and prevents sogginess.
• A wire rack under the mushrooms helps air circulate for crisper bottoms.
• For perfectly golden tops, finish briefly under the broiler and don’t walk away.

Variations

• Mini Party Bites: Use 24 cremini mushrooms; bake empty caps 7 minutes, then fill and bake 10–12 minutes.
• Spicy Cajun: Swap Old Bay for 1 tsp Cajun seasoning; add a minced jalapeño or 1/4 tsp cayenne to the filling.
• Gluten-Free: Use gluten-free panko or finely crushed pork rinds instead of breadcrumbs.

Storage & Make-Ahead

Assemble up to 24 hours ahead: pre-roast caps, cool, fill, and refrigerate tightly covered. Add topping just before baking. Leftovers keep 2–3 days refrigerated; reheat at 350°F (175°C) for 10–15 minutes, then broil briefly to re-crisp. Freezing is not recommended for stuffed mushrooms, but the crab filling alone can be frozen up to 2 months; thaw overnight and stir before using.

Nutrition (per serving)

Approximate per stuffed cap: 325 calories; 23 g fat; 10 g carbohydrates; 2 g fiber; 21 g protein; 700 mg sodium.