The day after a big holiday dinner, I always open the fridge and find a bowl of stuffing staring back at me. I wanted something new, so I tucked it into mushroom caps and baked them with a little Parmesan. The first bite was savory, herby, and a little crisp on top.

My family finished the tray before I could take a second photo. If you love turning leftovers into something fun, this Leftover Stuffing Mushrooms Recipe is for you.

Cooking Time

Here is how long this recipe takes from fridge to table.

Prep Time: 15 minutes
Cooking Time: 18 minutes
Total Time: 33 minutes

Ingredients You Will Need

This simple mushroom stuffing recipe uses just six ingredients. Most of them are probably in your kitchen already.

12 large crimini mushrooms: Pick firm, evenly sized caps so they bake at the same pace.
1 tablespoon olive oil: Brushing it on helps the mushrooms brown and stay juicy.
1 cup leftover stuffing: Any bread stuffing for mushrooms works, so use whatever you have.
2 tablespoons chicken or vegetable broth: It softens day-old stuffing so it does not turn dry.
1/4 cup grated Parmesan cheese: Grate it fresh, because it melts better than the pre-shredded kind.
2 tablespoons minced flat-leaf parsley: Add it at the end for a fresh, bright finish.

Note: serves several

Equipment You Need

You do not need anything fancy for this recipe.

Baking sheet: Holds the mushrooms in a single layer so they cook evenly.
Parchment paper or cooking spray: Stops the caps from sticking.
Small paring knife: Removes the stems and makes room for more stuffing.
Medium mixing bowl: Lets you mix the stuffing and broth easily.
Pastry brush: Spread the olive oil on the caps without making them greasy.
Spoon or small cookie scoop: Fills each cap neatly.

How to Make Leftover Stuffing Stuffed Mushrooms Recipe?

This recipe has two bakes: one to soften the mushrooms and one to melt the cheese. It sounds like extra work, but it keeps the mushrooms from getting soggy. Follow these steps and you will have a tray of golden appetizers in about half an hour.

Preheat the Oven and Prep the Pan

Heat your oven to 375°F (190°C). Line a baking sheet with parchment paper or give it a light spray of cooking oil. A prepared pan means the mushrooms lift off cleanly and you spend less time scrubbing later.

Clean and Hollow Out the Mushrooms

Wipe each mushroom with a damp paper towel. Do not rinse them under water, because they soak it up like sponges. Twist out the stems, then use a paring knife to trim away the pale area around the stem. That small trick gives you extra room for stuffing.

Give the Caps a Quick Pre-Bake

Brush the caps lightly with olive oil. Place them cavity side down on the pan and bake for 8 to 10 minutes. This first bake drives out some moisture and makes the mushrooms just tender. When you flip them over, you will see a little liquid on the pan, which is exactly what you want.

Mix the Stuffing and Broth

While the mushrooms bake, put the leftover stuffing in a bowl and stir in the broth. Day-old stuffing gets dry in the fridge, so this step brings it back to life. The mixture should feel moist and hold together when you press it.

Fill the Mushrooms

Turn the caps cavity side up. Spoon the stuffing into each one and press it down gently. Mound it a little on top, because it will settle as it bakes. Do not pack it too tight, or the center will stay dense.

Add Parmesan and Bake Again

Sprinkle the grated Parmesan evenly over the tops. Slide the tray back into the oven for 7 to 8 minutes. You are done when the cheese starts to melt and the edges of the stuffing look lightly golden.

Garnish and Serve

Scatter the minced parsley over the hot mushrooms. Move them to a plate while they are still warm. These are best served right away, when the cheese is soft and the tops are slightly crisp.

Additional Tips for Making This Recipe Better

These are the small things I learned after making this recipe a few times.

I always pre-bake the mushrooms. When I skipped it once, the caps leaked water into the stuffing and everything got soggy.
I choose caps that are about the same size. It makes baking time much more predictable.
I add the broth one tablespoon at a time. Some stuffings need a little more and some need less.
I save the stems and chop them finely. I stir them into the stuffing for extra mushroom flavor.
I grate Parmesan from a block. The flavor is stronger and the melt is much smoother.
I turn on the broiler for the last minute if I want a deeper golden top. I never walk away while it is on.

Common Mistakes to Avoid

A few small slip-ups can change how this recipe turns out. Here is what I have run into.

Skipping the pre-bake. I did this once, and the mushrooms turned watery. Always give them those first 8 to 10 minutes.
Using stuffing straight from the fridge. Cold, dry stuffing crumbles, so I always mix in broth first.
Washing the mushrooms under running water. They soak it up, so I wipe them with a damp towel.
Overfilling and packing too tightly. I mound the stuffing lightly so the heat reaches the middle.
Crowding the pan. I leave a little space between caps so they roast instead of steam.

How to Serve Leftover Stuffing Stuffed Mushrooms?

These mushrooms look great on a platter, and a few garnishes make them even better. Serve them warm for the best flavor. A little color on top makes the plate feel special.

Arrange the mushrooms on a white or wooden board and scatter fresh parsley over them. A few lemon wedges on the side add brightness. I like to set a small bowl of cranberry sauce or warm gravy next to them for dipping. The sweet and savory mix is hard to beat.

Since my website started out all about California, I love giving these a California-style spread. Put them on a platter with sourdough slices, a handful of olives, and fresh grapes, like a Napa-inspired appetizer board. They also travel well to a beach picnic or a road trip potluck. If you pick up your crimini mushrooms at a local California farmers market, they taste even better.

For a bigger meal, serve a few as a side next to roasted turkey, chicken, or a green salad.

Variations

This recipe is easy to adjust. Here are some ideas I have tried or plan to try next.

Stuffed portobello mushrooms: Use large portobello caps and bake a few minutes longer for a hearty meatless dinner.
Stove Top stuffing and cream cheese: Prepare boxed stuffing, mix in a spoonful of cream cheese, and fill the caps for a creamier bite.
Dairy-free: Skip the Parmesan or use a plant-based cheese, and use vegetable broth.
Vegan: Choose vegan stuffing and replace the cheese with nutritional yeast.
Sausage or turkey: Fold in a few tablespoons of cooked sausage or chopped leftover turkey.
Extra herbs: Add fresh thyme, sage, or garlic to the stuffing for a stronger flavor.
Sourdough version: Use leftover sourdough stuffing for a tangy, San Francisco-style twist.

Nutritional Information

Nutrition depends on the type of stuffing you use, so treat these numbers as a rough guide. The values below are estimates for one stuffed mushroom.

Calories: about 55
Protein: about 2 g
Carbohydrates: about 6 g
Fat: about 3 g

Make Ahead and Storage

These mushrooms are easiest to enjoy fresh, but you can prepare parts of the recipe ahead. Here is how I handle it.

Make Ahead

You can clean the mushrooms and mix the stuffing with the broth a few hours early. Keep both covered in the fridge. Fill and bake right before serving for the best texture.

Storing Leftovers

Place cooled mushrooms in an airtight container and refrigerate. They stay fresh for up to 3 days. Put a paper towel on the bottom of the container to absorb extra moisture.

Reheating

Reheat the mushrooms in a 350°F oven for about 8 to 10 minutes. This brings back the crisp top better than a microwave. Add a pinch of fresh parsley after reheating.

Freezing

Freeze baked mushrooms on a tray first, then move them to a freezer bag for up to 2 months. Thaw overnight in the fridge before reheating. The texture is a little softer after freezing, but the flavor holds up well.

Why You’ll Love This Recipe

This recipe turns what could be boring leftovers into something people get excited about. Here is why it works so well in my kitchen.

Quick and easy: There are only six ingredients and no complicated steps. It takes about 33 minutes from start to finish.
Great way to use leftovers: Stuffing sits in the fridge and often goes to waste. This gives it a second life as a fun appetizer.
Perfect for parties: The mushrooms are bite-sized and easy to pass around. They also make a lovely side dish at any holiday table.
Easy to customize: Swap the cheese, add sausage, or try portobello caps. You can easily match the recipe to your diet or your mood.
Full of cozy flavor: Herby stuffing, savory mushrooms, and salty Parmesan make a great combination. Every bite feels warm and comforting.