Stuffed Mushrooms

The chopped mushroom stems look like they’ll crowd the skillet, then soften and shrink as their moisture cooks away. I like that the filling starts with the stems instead of leaving them behind; it gives these stuffed mushrooms a savory center and keeps the caps whole for filling.

The panko goes in after the skillet comes off the heat, where the warm butter and stems can coat the crumbs without continuing to cook the garlic. Finely grated Parmesan folds into that mixture, while the parsley and black pepper keep each bite from tasting heavy. The caps turn tender in the oven, and the tops finish golden and crisp around the edges.

Why the mushroom stems need to dry out before the panko goes in

Fresh mushroom stems release a surprising amount of moisture as they cook. If that liquid is still pooled in the skillet when you add the panko, the crumbs soak it up and the filling turns damp rather than crumbly. Give the chopped stems their full 5 to 7 minutes over medium heat, stirring occasionally, and wait for the visible moisture to evaporate before moving on.

That skillet cue matters more than trying to fix a wet filling later. The butter should still coat the stems, but there shouldn’t be a watery layer underneath them. Once the garlic has cooked briefly, taking the skillet off the heat lets the panko and finely grated Parmesan combine with the warm mixture without the crumbs turning mushy. The result is a filling that stays in the caps and develops a golden top in the oven.

What each ingredient contributes to the mushroom filling

• Cremini mushrooms — Choose caps that are intact and close in size so they cook at a similar pace and hold a similar scoop of filling. Regular grocery-store cremini work well; there’s no need to seek out specialty mushrooms. Keeping the caps whole gives you a sturdy little cup, while the finely chopped stems add mushroom flavor to the center.
• Olive oil — Brushing the caps gives their surfaces a light coating as they bake. A basic olive oil is fine here; a strongly flavored finishing oil would be lost among the browned filling and mushroom juices.
• Unsalted butter — Butter coats the chopped stems and panko, helping the filling brown and taste rich. Unsalted butter keeps the salt level predictable alongside the Parmesan and the salt sprinkled on the caps.
• Garlic — Minced garlic needs only a brief cook in the hot skillet. Fresh cloves give the filling a clean, savory bite; finely chopping them helps them distribute without leaving large raw-tasting pieces.
• Panko breadcrumbs — The larger, airy crumbs give the topping its crisp texture. Standard panko is the right fit for this mixture; finer crumbs make a denser, softer filling, so I wouldn’t swap them in and expect the same finish.
• Finely grated Parmesan — Fine shreds mix evenly through the crumbs and melt into the filling. Use a finely grated style rather than thick shavings, which don’t distribute as smoothly. Parmesan also brings enough savory saltiness that the filling doesn’t need extra salt.
• Fresh parsley and black pepper — Parsley lifts the buttery filling with a fresh, green note, and black pepper adds a gentle warmth. Chop the parsley finely enough to spread it through the crumbs; freshly ground pepper works well, but ordinary ground black pepper is perfectly suitable.

Building the filling so the caps bake up tender, not soggy

Set up the caps cavity-side up

Heat the oven to 400°F and arrange the whole mushroom caps cavity-side up in a 9×13-inch baking dish. Brush them with olive oil and sprinkle with kosher salt so the exposed surfaces are seasoned before the filling goes in. Keep the caps upright, with the cavities open and easy to fill. If a cap tips over, turn it back before adding the topping.

Cook the chopped stems until their moisture evaporates

Melt the butter in a 10-inch skillet over medium heat, then add the finely chopped mushroom stems. Cook for 5 to 7 minutes, stirring occasionally, until they’re tender and their released moisture has evaporated. They’ll look softer and reduced from their raw volume, with no puddle left in the skillet. If the pan still looks wet, keep cooking rather than adding the crumbs early.

Let the warm skillet bring the filling together

Stir the minced garlic into the cooked stems and cook for 30 seconds. Remove the skillet from the heat, then mix in the panko, finely grated Parmesan, chopped parsley, and black pepper. Stir until the crumbs are coated and the ingredients are evenly distributed, but don’t press the mixture into a paste. The filling should look crumbly and hold together when spooned into a cap.

Fill the caps and bake until the tops turn golden

Divide the filling among the mushroom caps, keeping it inside each cavity rather than spreading it over the baking dish. Bake for 20 to 25 minutes, until the caps are tender and the tops are golden brown. The cap edges will look softened, and the crumb topping should have visible color. Let the mushrooms rest for 5 minutes before serving.

Two small changes to the Parmesan-panko topping

Questions that come up while making stuffed mushrooms

Stuffed Mushrooms

Stuffed mushrooms are filled with buttery panko, Parmesan, garlic, and parsley, then baked until the caps are tender and the tops are golden brown. They make an easy appetizer with a crisp, savory filling.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 29 minutes mins

resting 5 minutes mins

Total Time 49 minutes mins

Servings: 6 servings

Course: Appetizer

Cuisine: American

Calories: 130

Ingredients Equipment Method Notes

Ingredients

  

For the mushrooms

• 1 lb cremini mushrooms stems removed, caps kept whole and stems finely chopped
• 1 tbsp olive oil
• 0.25 tsp kosher salt

For the filling

• 2 tbsp unsalted butter
• 2 cloves garlic minced
• 0.5 cup panko breadcrumbs
• 0.33 cup Parmesan cheese finely grated
• 2 tbsp fresh parsley chopped
• 0.125 tsp black pepper

Equipment

• 1 9x13-inch baking dish
• 1 10-inch skillet

Method

 

Prepare the mushrooms

1. Heat the oven to 400°F.
2. Arrange the mushroom caps cavity-side up in a 9x13-inch baking dish.
3. Brush the mushroom caps with the olive oil.
4. Sprinkle the mushroom caps with the salt.

Make the filling

1. Melt the butter in a 10-inch skillet over medium heat.
2. Add the chopped mushroom stems and cook for 5 to 7 minutes, stirring occasionally, until tender and their moisture has evaporated.
3. Stir in the garlic and cook for 30 seconds.
4. Remove the skillet from the heat.
5. Mix in the panko, Parmesan, parsley, and black pepper.

Stuff and bake

1. Divide the filling among the mushroom caps.
2. Bake for 20 to 25 minutes, until the caps are tender and the tops are golden brown.
3. Let the mushrooms rest for 5 minutes before serving.

Notes

For the best texture, make sure the mushroom stems have cooked until their moisture has evaporated before adding the filling ingredients. Refrigerate leftovers for up to 3 days; freezing is not recommended because the mushrooms can become watery. For a gluten-free option, use gluten-free panko.