Mean Green Stuffed Portobellos

These easy to assemble and mouth watering stuffed portobello mushrooms are made with vegetables, whole grain brown rice, pesto and a crispy Parmesan topping.

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Mean Green Stuffed Portobellos

Servings SERVES 8
Ready in TOTAL TIME 45 mins


  • 1 bag Success® Brown Rice
  • 3 tbsp olive oil, divided
  • 2 cups shredded Brussels sprouts
  • 1 ½ cups broccoli florets
  • 2 finely chopped green onions
  • 3 garlic cloves, minced
  • ½ tsp salt and freshly ground black pepper
  • ¼ tsp hot pepper flakes
  • ⅓ cup prepared pesto
  • 8 large Portobello mushrooms, cleaned and brushed
  • ½ cup seasoned Italian bread crumbs
  • 2 tbsp grated Parmesan cheese
  • 2 tbsp butter, melted


  • If your mouth isn’t watering just by reading the ingredients list, it will definitely be by the time you’re done making these plant-based and whole grain stuffed mushrooms. With a veggie-forward savory Success® Brown Rice rice filling and crispy topping of Parmesan and breadcrumbs, it won’t take long before they become a new favorite. Watch the Video Recipe above!

    Step 1

  • Prepare rice according to package directions. Drain and remove from bag. Set aside.

    Step 2

  • Meanwhile, heat 1 tbsp oil in large nonstick skillet over medium-high heat. Cook Brussels sprouts, broccoli, green onions, garlic, salt, pepper, and hot pepper flakes for 5 to 7 minutes or until tender. Stir in rice and pesto. Remove from heat.

    Step 3

  • Preheat boiler to high and position rack in center of oven. Arrange mushrooms, stem side down, on a foil lined baking sheet. Brush all over with remaining oil. Broil for 4 minutes, flipping halfway through. Cool slightly.

    Step 4

  • Spoon rice mixture into each mushroom cap. Toss breadcrumbs and Parmesan with melted butter. Sprinkle over rice. Broil for 5 minutes or until topping is golden brown, filling is heated through and mushrooms are tender.

    Recipe Tips

    Use a spoon to scrape gills out of each mushroom cap. Be careful not to tear the edges of the mushrooms; maintaining their shape helps them hold as much filling as possible.

Get Your Fill!

Enjoy these savory Stuffed Portobello Mushrooms as an appetizer, snack or a side dish for your meal!

Although naturally vegetarian and satisfying on their own, these can easily be converted into a protein packed dish by adding cooked ground beef, turkey or Italian sausage into the rice mixture. Turn this hearty side dish into a well-balanced meal on your own terms.

If you’re all about that veggie filling life, why not try your hand at these Zucchini Boats or Shiitake Stuffed Acorn Squash.