Easy Stuffed Mushrooms

Last Updated on September 30, 2023

Super simple and easy stuffed mushrooms recipe – 5 ingredients, 35 minutes, and your delicious side dish or appetizer is ready. 

This stuffed mushrooms recipe makes a welcome addition to any holiday table. It is easy to prepare, requires just a few ingredients and your guests will be begging for the recipe. Guaranteed!

At the same time, this recipe is so simple that you will want to make it often as a side dish for weekday dinners.

Did I mention that stuffed mushrooms is also a perfect dish if you are on a keto or low-carb diet?

tasty Stuffed mushrooms

White button mushrooms (champignon) or cremini (baby Bella) mushrooms work the best for this recipe. You can stuff portobellos too, but you will have to make more stuffing to fill this type of mushroom.

For demonstration purposes, I used a small pack (8 oz) of white button mushrooms from the grocery store which contained 10 mushrooms. It was just the right amount for me and my husband to have as a side dish for dinner. For holiday gatherings – at least quadruple the number of ingredients.

ingredients for stuffed mushrooms

 Ingredients for stuffed mushrooms.


Prep time15 min
Cook time30-35 min


  • 8 oz (1 small pack) of a white button or cremini mushrooms 
  • ¼ medium size white onion bulb, finely diced
  • 2 oz of finely shredded Parmesan cheese
  • a sprig of parsley, chopped (optional)
  • a sprig of thyme – leaves removed from stem
  • 1 tablespoon of butter
  • ⅛ tsp of salt
  • ⅛ tsp of freshly ground pepper 
ingredients for stuffed mushrooms - all chopped and ready

Step by Step Instruction

  1. Wash mushrooms and wipe with a paper towel.
  2. Separate mushroom stems from caps.
  3. Arrange mushroom caps in a baking dish greased with cooking spray.
  4. Preheat oven to 380 F.
  5. Finely dice mushroom stems.
  6. In a skillet melt butter, add diced mushroom stems, finely diced onion, and thyme. Cook for 2 minutes on medium-high until onion is golden-translucent. Turn off the heat.
stuffed mushrooms - frying mushrooms stems with onions
  1. Let the mixture cool off. Add finely shredded Parmesan, and chopped parsley, and mix with the rest of the ingredients. This will be your stuffing.
stuffed mushrooms stuffing
  1. Fill mushroom caps with the stuffing.
baked stuffed mushrooms - ready for baking
  1. Bake in the oven for 30-35 minutes (depending on the size of the mushrooms). During baking, mushrooms should release juice and you should bake them till the juice evaporates, otherwise, the mushrooms will be spongy.

Serve at once. 

stuffed mushrooms on the plate

Do Ahead

If you want to serve the dish for a holiday dinner – you can prepare stuffed mushrooms a day ahead. 

Do steps 1-8 a day before the crowd is coming, cover the baking dish containing stuffed mushrooms with clear plastic wrap, and store in the fridge for up to 24 hours. Then bake the mushrooms the next day before serving (step 9 from instructions).

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