Grilled portobello steaks with avocado

Grilled portobello steaks are marinated in a zesty mix and served with a fresh avocado chimichurri sauce, making for a satisfying vegan meal. This recipe highlights the rich umami of mushrooms and the vibrant flavors of herbs and spices.

24 Jan 2026
Cook time 10 min
Prep time 15 min

Ingredients:

4 mushrooms
1/3 cup vinegar
1/2 cup olive oil
1/2 tsp ground cumin
1/2 tsp black pepper
1/4 tsp paprika
1.50 cups fresh parsley
6 garlic cloves
1 shallot
1/4 tsp red pepper (spice)
3 tbsp lemon juice
1/2 tsp salt
1 avocado
Grilled portobello steaks with avocado

Grilled portobello steaks with avocado sauce are a delicious, plant-based alternative to traditional meat steaks. This recipe features savory grilled portobello mushrooms paired with a vibrant and zesty avocado chimichurri sauce, loaded with fresh herbs and spices. Perfect for a healthy, yet satisfying meal that is both vegan and gluten-free, this dish brings together rich flavors and wholesome ingredients.

Instructions:

1. Prepare the Marinade:
- In a medium bowl, whisk together 1/3 cup vinegar, 1/2 cup olive oil, 1/2 tsp ground cumin, 1/2 tsp black pepper, and 1/4 tsp paprika until well combined.
2. Marinate the Mushrooms:
- Clean the portobello mushrooms by gently wiping them with a damp cloth or paper towel.
- Remove the stems from the mushrooms and place the mushrooms in a shallow dish.
- Pour the marinade over the mushrooms, ensuring each mushroom is well-coated.
- Let the mushrooms marinate for at least 30 minutes at room temperature or up to 2 hours in the refrigerator.
3. Prepare the Avocado Chimichurri Sauce:
- In a food processor, combine 1.50 cups fresh parsley, 6 garlic cloves, and 1 shallot. Pulse until finely chopped.
- Add 1/4 tsp red pepper flakes, 3 tbsp lemon juice, and 1/2 tsp salt to the mixture.
- Halve the avocado, remove the pit, and scoop the flesh into the food processor.
- Blend until smooth, slowly adding the reserved 1/4 cup olive oil from the marinade to achieve desired consistency. The sauce should be slightly chunky but well-mixed.
4. Grill the Mushrooms:
- Preheat your grill to medium-high heat.
- Once hot, place the marinated portobello mushrooms on the grill, gill side down.
- Grill for about 5-7 minutes per side, or until the mushrooms are tender and have nice grill marks.
5. Serve:
- Remove the mushrooms from the grill and let them rest for a few minutes.
- Place the grilled portobello steaks on a serving platter.
- Spoon the avocado chimichurri sauce generously over the mushrooms.
6. Enjoy:
- Serve immediately, pairing with your favorite side dishes or salads.

Grilled portobello steaks with avocado sauce offer a delectable and nutritious meal that can be enjoyed by everyone, from vegans to meat lovers looking for a lighter option. The combination of the meaty texture of portobello mushrooms and the fresh, zesty flavors of the avocado chimichurri sauce makes it a standout dish. Serve with a side of roasted vegetables or a mixed greens salad for a complete and satisfying meal.

Grilled portobello steaks with avocado FAQ:

What is the grilling time for portobello mushrooms?

Grill the marinated portobello mushrooms for about 5-7 minutes per side. They should be tender and have nice grill marks when done.

How should I store leftovers of grilled portobello steaks?

Store leftover grilled portobello steaks in an airtight container in the refrigerator for up to 3 days. Reheat gently on the grill or in a microwave.

Can I use other types of mushrooms instead of portobello?

While portobello mushrooms are ideal for this recipe, you can use large shiitake or king oyster mushrooms as a substitute, but cooking times may vary.

What can I substitute for olive oil in the marinade?

You can substitute olive oil with avocado oil or a neutral oil like canola or grapeseed oil, maintaining the same quantity for the marinade.

How can I adjust the spiciness of the avocado chimichurri sauce?

To adjust spice levels, reduce the amount of red pepper flakes in the chimichurri sauce or omit them altogether. You can also add more lemon juice to balance the flavor.

Tips:

- Make sure to clean the portobello mushrooms thoroughly by gently wiping them with a damp cloth or paper towel to remove any dirt.

- Marinate the mushrooms for at least 30 minutes before grilling to allow the flavors to fully infuse.

- Use a grill pan or outdoor grill to cook the mushrooms for an added smoky flavor.

- Grill the mushrooms on medium-high heat to ensure they cook evenly and develop a nice char.

- For the chimichurri sauce, make sure to finely chop the parsley, garlic, and shallot; this helps to evenly distribute the flavors.

- Use a ripe avocado for a smoother and creamier chimichurri sauce.

- Prepare the avocado chimichurri sauce just before serving to maintain its vibrant color and fresh taste.

Nutrition per serving

4 Servings
Calories 130kcal
Protein 4.64g
Carbohydrates 13g
Fiber 5g
Sugar 3.24g
Fat 36g

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