Platter of Vegetable Quinoa Stuffed Portobello Mushrooms with a measuring cup of chimichurri
4.55 from 24 votes

Quinoa & Vegetable Stuffed Portobello Mushrooms

Quinoa, black bean, and vegetable stuffed portobello mushrooms with chimichurri sauce! A hearty, wholesome 30-minute plant-based meal.
Author: Minimalist Baker
Prep Time 5 minutes
Cook Time 25 minutes
Total Time 30 minutes
Servings: 4
Category: Entree
Cuisine: Gluten-Free, Vegan
Freezer Friendly No
Does it keep? 3-4 Days



  • 1 tsp avocado or coconut oil (or water)
  • 1/2 cup uncooked quinoa* (or 1 1/4 cup (230 g) cooked quinoa as original recipe is written // adjust if altering batch size)
  • 1 Tbsp melted coconut oil or avocado oil
  • 1 1/2 cups organic diced sweet potatoes (or butternut squash)
  • 1 cup diced bell pepper (I prefer red)
  • 1 cup chopped red cabbage
  • 1 tsp ground cumin (divided)
  • 1 tsp chili powder (or smoked paprika // divided)
  • 1/2 tsp sea salt (divided)
  • 1/2 cup cooked black beans (cooking/canning liquid drained)


  • 4 large portobello mushrooms* (stems removed, wiped clean)
  • 1-2 Tbsp avocado or melted coconut oil (or sub water or vegetable broth)
  • 2 Tbsp balsamic vinegar
  • 1 Tbsp lime juice
  • 1/2 tsp ground cumin (divided)
  • 1/4 tsp chili powder or smoked paprika (divided)
  • 1/4 tsp sea salt
  • 1 Tbsp lime juice

FOR SERVING optional


  1. Preheat oven to 400 degrees F (204 C) and set out a rimmed baking sheet or a large baking dish. (Or, if grilling, heat grill.)
  2. If you don't have any cooked quinoa on hand, start by heating a medium saucepan over medium heat. Once hot, add avocado oil or coconut oil or water (1 tsp as original recipe is written) and rinsed and drained quinoa (1/2 cup as original recipe is written). Sauté for 1-2 minutes, stirring frequently to toast. Then add 1 cup water and a pinch of salt (amounts as original recipe is written // adjust if altering batch size).

  3. Bring to a boil over medium-high heat. Then reduce heat to simmer and cook until liquid has mostly absorbed and the quinoa is tender (~15-18 minutes). Drain off any excess liquid if needed. Then set off the heat uncovered to let any excess moisture evaporate.
  4. In the meantime, add mushrooms to a shallow baking or serving dish and season with oil (or water or vegetable broth), balsamic vinegar, lime juice, cumin, chili powder, and sea salt. Flip/toss to combine and set aside to let marinate.
  5. Next, prepare vegetables by heating a large skillet over medium heat. Once hot, add oil or water (1 Tbsp (15 ml) as original recipe is written // adjust if altering batch size), sweet potatoes, and bell pepper. Sauté for 3-5 minutes (covered) or until slightly browned, stirring occasionally.

  6. Add cabbage, 1/2 tsp cumin, 1/2 tsp chili powder, and 1/4 tsp sea salt (amounts as original recipe is written // adjust if altering batch size) and sauté for another 3-5 minutes or until all vegetables (especially potato) are tender and slightly golden brown. Set aside.

  7. Transfer vegetables from skillet to a large mixing bowl and set aside. Then, to the same skillet over medium heat, add the mushrooms and sauté for 2 minutes on both sides to brown and soften. Cover to lightly steam for the final minute. Then transfer to a baking sheet face up and set aside.
  8. To the mixing bowl with the vegetables, add cooked quinoa, drained black beans, remaining 1/2 tsp cumin, 1/2 tsp chili powder, 1/4 tsp sea salt (amounts as original recipe is written // adjust if altering batch size), and lime juice and toss to combine.

  9. Divide the filling between the mushrooms (some may overflow - that's fine). Bake at 400 degrees (or on the grill, covered) for about 5 minutes or until mushrooms and toppings are hot and slightly browned.
  10. Enjoy immediately as is or with a sauce of choice (optional // I think the chimichurri goes awesome with this recipe!). Store leftovers separate from sauce(s) and covered in the refrigerator for 3-4 days. Reheat in a 350-degree F (176 C) oven or the microwave until hot.


*To keep this recipe grain-free, omit the quinoa, double the black beans, and double the vegetables.
*If you aren’t into mushrooms, you could sub eggplant (similar to this recipe) or halved bell peppers (like in this recipe). You could also use this as a taco salad topper, or enchilada stuffer (just double the amount of beans).
*Cook time reflects prepping vegetables and mushrooms while quinoa is cooking.
*Nutrition information is a rough estimate calculated with beans, quinoa, vegetables, and no sauce.

Nutrition Per Serving (1 of 4)