Name: Stuffed Mushrooms
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 24 servings
Cuisine: Italian
Ingredients: 16 oz white mushrooms, ((about 24)); 2 tablespoons olive oil, plus 1 teaspoon, (divided); ¼ onion, (chopped); 3 cloves garlic, (minced); ½ cup panko; ½ cup freshly grated Parmesan cheese; 1 tablespoon chopped Italian parsley; ½ teaspoon fresh thyme leaves; 1 teaspoon lemon zest; ½ teaspoon kosher salt; Dash of crushed red pepper flakes

These easy stuffed mushrooms are the perfect holiday appetizer. Baked with a savory Parmesan filling and crispy panko topping, they're a crowd-pleaser.

Stuffed mushrooms make a perfect holiday appetizer because they're easy to assemble in advance and always disappear fast. The combination of tender mushroom caps, a savory filling of chopped stems, onion, garlic, and Parmesan, plus a crunchy panko topping, works for any gathering. The lemon zest adds just enough brightness to keep the filling from feeling heavy.

Why You’ll Love This Stuffed Mushrooms

No waste: the chopped mushroom stems go right into the filling, giving you double the mushroom flavor.
Make ahead friendly: you can stuff the mushrooms a day ahead and bake right before guests arrive.
The contrast between the tender mushroom cap and the crisp, golden panko topping makes every bite satisfying.

Key Ingredients for the Best Stuffed Mushrooms

Mushrooms: Cremini (baby bella) mushrooms have a deeper, earthier flavor than white button mushrooms, but either works. Look for mushrooms about 1.5 inches wide with flat tops so they sit steady on the baking sheet. If the caps are too small, they won't hold much filling.
Panko: Japanese panko breadcrumbs give a lighter, crunchier topping than regular breadcrumbs. If you can't find panko, crush a few crackers or use plain breadcrumbs, though the texture won't be quite as airy.
Parmesan: Freshly grated Parmesan melts into the filling and adds a salty, nutty note. Pre-shredded cheese often contains anti-caking agents that prevent smooth melting, so grate it yourself.

Kitchen Tools for Stuffed Mushrooms

Large baking sheet: gives the mushrooms room to roast without steaming each other.
Parchment paper: makes cleanup easy and prevents sticking.
Medium skillet: for sautéing the onion and chopped stems until tender.
Medium mixing bowl: for combining the filling ingredients.
Sharp knife and cutting board: for removing stems and chopping.
Small spoon or melon baller: helps fill the caps neatly.

Tips for Perfectly Baked Stuffed Mushrooms

Clean mushrooms by wiping them with a damp paper towel instead of rinsing, submerged mushrooms soak up water and become soggy during baking. When you pull out the stems, save them all for the filling; that's where a lot of flavor is. Don't skimp on the filling, pile it into each cap and press gently so it holds together. A drizzle of olive oil over the tops before baking helps the panko brown evenly. Bake just until the mushrooms are tender and the tops are golden, 20 to 25 minutes at 400°F.

How to Customize Your Stuffed Mushrooms

These vegetarian stuffed mushrooms are easy to adapt. Swap the Parmesan for pecorino romano or gruyère for a different salty kick. Add cooked crumbled sausage, bacon, or chopped shrimp to the filling for a heartier version. For extra greens, stir in a handful of chopped spinach or finely diced zucchini (squeeze out excess moisture first). If you like a sweet-tangy finish, drizzle a little balsamic glaze over the mushrooms just before serving.

What to Serve with Stuffed Mushrooms

These stuffed mushrooms work as a stand-alone appetizer alongside a bowl of marinara or ranch dressing for dipping. For a holiday spread, pair them with baked brie, a cheese board, and some crispy crostini. They also go well with roasted vegetables or a light salad if you're serving them as a side dish.

How to Store Leftover Stuffed Mushrooms

Let any baked stuffed mushrooms cool completely, then transfer them to an airtight container. They will keep in the refrigerator for up to 4 days. To reheat, arrange them on a baking sheet and warm in a 350°F oven for 5 to 10 minutes, this restores the crisp topping better than a microwave.

Best Way to Reheat Stuffed Mushrooms

To bring leftover stuffed mushrooms back to life, place them on a parchment-lined baking sheet and reheat in a 350°F oven for 5 to 10 minutes. The oven heat re-crisps the panko topping without drying out the mushroom caps. Avoid the microwave, which makes the mushrooms rubbery and the topping soggy.