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+ servings
Stuffed portobello mushrooms on a plate.
5 from 2 votes

Stuffed Portobello Mushrooms

These delicious stuffed portobello mushrooms are stuffed with an easy walnut ground that is tossed with pesto and vegetables. It is the perfect vegetarian meal.
Prep 20 minutes
Cook 20 minutes
Total 40 minutes
Fat 30
Carbs 10
Protein 10
Yield 4

Ingredients

  • 4-5 large portobello mushrooms stem removed
  • 1.5 tablespoons olive oil
  • ½ teaspoon coarse salt
  • ¼ teaspoon freshly ground pepper

Filling

  • ¼ large yellow onion diced
  • 2 cloves garlic minced
  • 1 cup chopped raw walnuts
  • ½ teaspoon coarse salt
  • ½ teaspoon freshly ground pepper
  • ½ teaspoon paprika
  • ½ teaspoon dried thyme
  • cup quartered cherry tomatoes
  • 2- oz. plain goat cheese
  • 2 tablespoons pesto

Instructions

  • Preheat the oven to 400ºF and set a wire rack on a baking sheet. Place the mushrooms open side up on the wire rack. Drizzle the mushrooms with olive oil and season with salt and pepper. Use your hands to massage the oil and seasonings into the mushrooms.
    Portobello mushrooms on a baking sheet.
  • Place the mushrooms into the oven and bake them for 12-15 minutes or until they begin to soften and release moisture.
  • Remove the mushrooms from the oven and let them rest while you prepare the filling.
  • Heat a large skillet over medium/high heat and add olive oil to the skillet. When the olive oil is fragrant, add the onion to the skillet with a pinch of salt and sauté the onion for 2-3 minutes. Add the garlic and saute for an additional minute.
  • Add the minced walnuts to the skillet along with the salt, pepper, paprika, and thyme. Toss until all the ingredients are coated in spices. Cook the walnuts over medium heat until they begin to brown (4-5 minutes).
    Walnut ground in a skillet.
  • Add the cherry tomatoes to the skillet and let them sauté with the other ingredients for 2-3 minutes.
  • Remove the skillet from heat and carefully add about ¼ cup of the walnut filling to the middle of each well of portobello mushrooms. The mixture should be a mound of filling. If your mushrooms don’t have a well in the middle, that’s okay! You can still scoop the filling on top of the mushroom.
  • Turn the heat on the oven to broil.
  • Crumble goat cheese over the top of each mushroom and place the mushrooms back into the oven for 2-3 minutes or until the cheese has melted. Make sure to check the mushrooms after 1 minute as each oven is different.
    Stuffed portobello mushrooms with goat cheese on top.
  • Remove the mushrooms from the oven and drizzle each mushroom with pesto. Serve and enjoy.
    Stuffed mushrooms on a plate

Tips & Notes

  • Portobello mushrooms come in all shapes and sizes. Try your best to find the largest mushrooms you can find. If you can’t find 4-5 large mushrooms you can always use smaller mushrooms and distribute the filling accordingly.
  • Every oven is different so be sure you keep an eye on the mushrooms while they are under the broiler.

Nutrition Facts

Calories: 331kcal | Carbohydrates: 10g | Protein: 10g | Fat: 30g | Fiber: 4g | Sugar: 4g