Easy Cheesy Stuffed Portobello Mushrooms (Quick Vegetarian Dinner Recipe)

These Cheesy Garlic-Stuffed Portobello Mushrooms are an easy and flavorful dish perfect for weeknight dinners or entertaining. Juicy mushroom caps are filled with a buttery garlic-herb breadcrumb mixture, gooey mozzarella, and a fresh tomato slice for the perfect bite.

Serving plate of stuffed portobello mushrooms with mozzarella, tomato, parsley, garlic, panko, and Parmesan

Stuffed portobello mushrooms have always held a special place in our kitchen. I remember the first time I made them on a chilly winter night when I was craving something cozy and flavorful but not too heavy. This version, filled with buttery breadcrumbs, garlic, and gooey mozzarella, has quickly become one of our favorite go-to comfort dishes that’s perfect for all seasons!

What I love most about this recipe is how it manages to feel both indulgent and wholesome. It comes together easily with simple ingredients and fills the kitchen with the most incredible aroma. Whether I’m serving them as a vegetarian main or an elevated side dish, they never fail to impress and satisfy.

Serving tray of stuffed portobello mushrooms with mozzarella, tomato, parsley, garlic, panko, and Parmesan

Why you’ll love this recipe

  • Satisfyingly delicious – These stuffed portobello mushrooms make the perfect appetizers, but are also hearty enough to serve as a main course.
  • Irresistible flavor – The combination of melty mozzarella, garlic, and herbs is simply divine.
  • Easy weeknight option – Comes together with simple ingredients and is ready in under 20 minutes!
  • Fresh & flavorful – With the addition of juicy tomato and bright zingy parsley, it brightens every bite in your mouth.

Ingredients needed

Ingredients for stuffed portobello mushrooms
  • 4 large portobello mushrooms Meaty and flavorful, these serve as the perfect edible base for stuffing
  • 2 tbsp melted butter (plus more for brushing) Adds richness and helps the mushrooms roast to perfection
  • Panko breadcrumbs Brings texture and a golden crunch to the stuffing
  • Grated Parmesan cheese Adds a salty, nutty flavor that crisps up in the oven
  • Fresh chopped parsley Brings freshness and a pop of color
  • Salt & pepper
  • 1 clove of garlic, minced Infuses the filling with bold, aromatic depth
  • Italian seasoning Adds a savory, herby touch
  • Mozzarella cheese Melts beautifully and gives that gooey, cheesy center
  • Sliced tomato Juicy and slightly acidic, the tomatoes balance the richness of the overall dish.

How to make stuffed portobello mushrooms

  1. Prepare the mushrooms:
    Remove stems and gently clean the tops of the portobellos. Brush the tops with melted butter and place them top-down on a baking sheet lined with parchment paper.
  1. Make the breadcrumb mixture:
    In a mixing bowl, combine panko, Parmesan, parsley, salt, and pepper.
Glass bowl of panko, Parmesan, and parsley
Glass bowl of panko, Parmesan, parsley, salt, and pepper
  1. Sauté garlic & seasonings:
    In a small skillet, melt 2 tbsp butter over medium-high heat. Add minced garlic and Italian seasoning; cook for 30 seconds until fragrant. Pour into the breadcrumb mixture and stir to combine.
Pan of butter, garlic, Italian seasoning
  1. Assemble the mushrooms:
    Lay one slice of mozzarella inside each mushroom cap. Top with a generous spoonful of the breadcrumb mixture, then place one tomato slice on top.
Portobello mushroom top filled with a mixture of panko, parsley, and Parmesan cheese
Portobello mushroom top with sliced tomato
  1. Bake and serve:
    Bake for 12 minutes, then broil on high for 3 minutes to crisp the tops. Sprinkle with any remaining parsley and serve warm.
Serving tray of stuffed portobello mushrooms with mozzarella, tomato, parsley, garlic, panko, and Parmesan

Tips, tricks, and variations

  • Add protein — Top with a fried or poached egg for a more filling vegetarian meal.
  • Swap the cheese Try goat cheese, feta, or shredded cheddar in place of mozzarella for a different flavor.
  • Make it spicy Add crushed red pepper flakes or chopped jalapeños to the breadcrumb mixture.
  • Grill instead of bake For a smoky flavor, grill the stuffed mushrooms over medium heat until the cheese is melted and the tops are golden.
Serving tray of stuffed portobello mushrooms with mozzarella, tomato, parsley, garlic, panko, and Parmesan

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Serving plate of stuffed portobello mushrooms with mozzarella, tomato, parsley, garlic, panko, and Parmesan

Cheesy Stuffed Portobello Mushrooms


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  • Author: cooktimestory
  • Total Time: 19 minutes
  • Yield: 15 1x

Description

These Cheesy Stuffed Portobello Mushrooms are an easy and flavorful dish perfect for weeknight dinners or entertaining. Juicy mushroom caps are filled with a buttery garlic-herb breadcrumb mixture, gooey mozzarella, and a fresh tomato slice for the perfect bite.


Ingredients

Scale
  • 4 large portobello mushrooms
  • 1 large mozzarella ball, sliced
  • 3 tomatoes on the vine, sliced
  • 1/2 cup panko
  • 1/4 cup grated parmesan cheese
  • 1/4 cup parsley, finely chopped
  • Salt & pepper, to taste
  • 1/3 cup butter
  • 1 clove garlic, minced
  • 1 tsp Italian seasoning


Instructions

  1. Preheat oven to 375°F. De-stem all of the mushrooms and clean the tops, as shown in the video. Then lay them out, top side down, on a sheet pan covered in parchment paper.
  2. Slice the mozzarella and tomatoes, and set aside. Then brush the mushroom tops with melted butter and flip over to fill later.
  3. In a small mixing bowl, add the panko, parmesan, chopped parsley, and salt and pepper. Set aside.
  4. In a small pan over medium-high heat, melt butter and add the garlic and Italian seasoning. Cook for 30 seconds until fragrant. Pour into the breadcrumb mixture and stir to combine.
  5. Now assemble everything on the mushrooms! Add mozzarella, the panko mixture, and the tomatoes, and repeat for each mushroom.
  6. Bake in the oven for 12 minutes, then broil for 3 additional minutes. Garnish with any remaining parsley before serving. Enjoy!
  • Prep Time: 4
  • Cook Time: 15

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