Preheat the Oven: Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or lightly grease it.
Prepare the Mushrooms: Clean the mushroom caps using a damp cloth or paper towel. Remove the stems and finely chop them.
Cook the Filling: Heat olive oil in a pan over medium heat. Add chopped onions, garlic, bell pepper, and chopped mushroom stems. Sauté for 5-7 minutes, until softened. Add spinach and cook until wilted. Season with salt and pepper to taste. Remove from heat and allow to cool slightly.
Combine Filling Ingredients: In a large bowl, combine the cooked veggie mixture, breadcrumbs, cream cheese, parmesan, and fresh herbs (if using). Mix until well combined.
Stuff the Mushrooms: Spoon the veggie mixture into the mushroom caps, pressing it down gently to ensure they’re well-stuffed.
Bake: Arrange the stuffed mushrooms on the prepared baking sheet and bake for 18-20 minutes, or until the mushrooms are tender and the filling is golden and bubbly.
Serve: Garnish with fresh herbs or a sprinkle of parmesan before serving. Enjoy warm!
Notes
Ensure the mushrooms are not too wet before stuffing. If necessary, pat them dry with a paper towel.
If you’re making these ahead of time, store them in the fridge and bake them when ready to serve.