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Home » Recipes » Food

Stuffing Stuffed Portobello Mushrooms (From Leftovers)

By: Melissa, Updated: Jun 23, 2026

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Make use of that leftover stuffing with this savory, mouthwatering meal. With leftover stuffing, hearty portobello mushrooms and cheese, it is a quick and delicious meatless dinner or side!

Stuffed portobello mushrooms with stuffing on a plate.

A Leftover Stuffing Transformation!

Nothing makes me happier than transforming leftovers and making sure no food goes to waste. I make LOTS of recipes around this idea from using strawberry tops to make simple syrup to holiday leftovers ideas and everyday meal ideas (I added some of these at the bottom of the post!)

Food is money and food in my mind should not be wasted. When I make stuffing at the holidays or for dinner, I love making a new meal from it if I am lucky enough to have leftovers.

These stuffing stuffed mushrooms are hearty enough to be a main dish on their own and are one of my favorite transformations. The best part (aside from how good they are) is it is ready in under 30 minutes. It is so good, I make stuffing just so I can make this the next night!

What You Will Need

  • Portobello mushrooms: Looks for large ones with high sides if you can.
  • Leftover stuffing: I make this with store-bought stuffing mix (Stouffer's or any brand will work) that is leftover from a previous meal or sometimes I cook some up the night before. When I have a little more time, my favorite from scratch stuffing recipe is this sourdough stuffing from the recipe site Mommy hates cooking.
  • Olive oil: If you want to make it more decadent, feel free to use melted butter.
  • Parmesan cheese: I like the salty flavor this adds so I use this. You can use any good melting cheese.

How To Make Stuffed Mushrooms With Stuffing

  • Prepare the mushrooms: Remove the stem and the "gills" of the mushrooms. Portobello mushrooms have those dark gills around the stem that dye any food that comes into contact with them and doesn't taste amazing.
  • Add stuffing: Generously mound stuffing into the mushrooms. You can add as much as you like 🙂
  • Top the mushrooms: Liberally drizzle the stuffing with olive oil which will help keep it from drying out then top with the shredded cheese.
  • Bake: I like to bake the stuffed mushrooms on the middle rack for most of the time and for the last 5 minutes I move them to the top rack to help them brown on top.

What To Serve With Stuffed Mushrooms

These stuffed mushrooms are perfect as a stand alone meal but can also be eaten as a side. If you want pairing ideas for that, here are some ideas!

  • Serve these alongside a garlic and olive oil pasta. The stuffing and pasta combo is delicious.
  • My husband and I like making a gratin to go along with this. It is an all veggies meal but so good.
  • Almost any chicken or pork dish with go with this.

Variations

You can change this one up many ways! Here are some ideas:

  • Make it an appetizer! You can use cremini mushrooms which are smaller and the same as portobello.
  • Omit or switch out the cheese: The cheese topping is totally optional (but so good!). You can leave it out or change it to your favorite type.
  • Add some meat! I do love adding in a little crisped up bacon, sausage or pancetta if I have it to the stuffing mix.

More Delicious Meals From Leftovers!

  • Fried rice with leftover pork in a large pan.
    Quick And Easy Pork Fried Rice Recipe (From Leftovers)
  • A pan full of pasta with prime rib in it.
    Easy Prime Rib Stroganoff (From Leftovers)
  • Cooked chicken fajitas on a plate.
    Amazing Fajitas From Leftover Chicken
  • ham and cheese pasta
    Creamy Ham and Cheese Pasta

Stuffed portobello mushrooms with stuffing on a plate.
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Stuffing Stuffed Portobello Mushrooms (From Leftovers)

Make use of that leftover stuffing from the holidays or dinner with this savory, mouthwatering meal. With leftover stuffing, hearty portobello mushrooms and cheese, it is quick and delicious meatless dinner or side!
Prep Time5 minutes mins
Cook Time20 minutes mins
Total Time25 minutes mins
Servings: 4 servings
Author: Melissa Oleary

Ingredients

  • 4 Portobello mushrooms stems removed and gills scraped out
  • 3 cups Leftover stuffing
  • 1 cup Parmesan cheese shredded
  • Olive oil enough to liberally drizzle over the tops of the mushrooms.

Instructions

  • Preheat the oven to 375 degrees.
  • Prepare the portobello mushrooms by removing them stems and scraping the dark inside out of them (the gills).
    4 Portobello mushrooms
  • Place mushrooms bottom side facing up on to a sheet pan.
  • Stuff the mushrooms with the leftover stuffing. Mound as much as you like in each of the mushroom cavities.
    3 cups Leftover stuffing
  • Evenly and liberally drizzle the olive oil over the stuffing.
    Olive oil
  • Sprinkle the cheese over the stuffing evenly.
    1 cup Parmesan cheese
  • Bake on the middle rack for 15 minutes.
  • After 15 minutes, place the sheet pan on the upper rack and bake for an additional 5 minutes or until lightly golden on top.

Nutrition

Calories: 382kcal | Carbohydrates: 37g | Protein: 16g | Fat: 20g | Saturated Fat: 7g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 8g | Trans Fat: 0.003g | Cholesterol: 17mg | Sodium: 1127mg | Potassium: 440mg | Fiber: 5g | Sugar: 5g | Vitamin A: 665IU | Calcium: 347mg | Iron: 2mg

Nutrition Values are estimates only.

See full nutrition disclaimer here

Tried the Recipe? We Would Love To Hear From You In The Comments Below!

Course :holidays, Main Course, quick meal, Side Dish

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profile picture of Melissa from Keeping It Simple Blog

I am so excited you are here. My name is Melissa and I started this recipe website to share easy recipes that I have been cooking for years. I have written hundreds of easy recipes that are tested and perfected. Some of the recipes I learned during my years of working in restaurants, some from owning my own food company, and others from friends and traveling.

More about me →

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