Introduction
Caprese Stuffed Portobello Mushrooms are a flavorful and healthy dish that combines the richness of portobello mushrooms with the fresh, vibrant flavors of a traditional Caprese salad. This vegetarian dish is perfect as an appetizer, main course, or side dish. It’s light yet satisfying and can be easily customized to suit various dietary preferences.
The History of Ingredients
- Portobello Mushrooms: A type of mature Agaricus bisporus mushroom, portobellos have been enjoyed for centuries. They are known for their large, meaty texture, making them a popular choice for vegetarian and vegan dishes.
- Tomatoes: Native to the Americas, tomatoes were first cultivated by the Aztecs and Incas and later introduced to Europe in the 16th century. They’re a key component of Italian cuisine, especially in dishes like Caprese.
- Fresh Basil: Basil, a fragrant herb, has been used in cooking for thousands of years, especially in Mediterranean and Asian cuisines. It plays a starring role in Caprese salads, adding a hint of sweetness and pepperiness.
- Mozzarella: Originating in Italy, mozzarella is a fresh cheese traditionally made from the milk of water buffalo. The soft, creamy texture of mozzarella complements the tangy tomatoes and fresh basil in Caprese dishes.
Ingredients Breakdown
- 4 large portobello mushrooms
- 2 medium-sized ripe tomatoes, chopped
- 1 cup fresh mozzarella cheese, diced or sliced
- 1/4 cup fresh basil leaves, chopped
- 1 tablespoon balsamic vinegar
- 2 tablespoons olive oil
- Salt and pepper, to taste
- 1 clove garlic, minced (optional)
- A drizzle of extra virgin olive oil for finishing (optional)
Step-by-Step Recipe
- Preheat the oven to 375°F (190°C).
- Prepare the mushrooms: Remove the stems from the portobello mushrooms and gently scrape out the gills with a spoon. Clean the caps with a damp paper towel to remove any dirt. Place them on a baking sheet, gill side up.
- Season the mushrooms: Brush the mushroom caps with olive oil and sprinkle with salt and pepper. Optionally, you can also rub the gills with a little minced garlic for added flavor.
- Prepare the Caprese filling: In a bowl, combine the chopped tomatoes, mozzarella, fresh basil, and balsamic vinegar. Stir to mix evenly and season with salt and pepper to taste.
- Stuff the mushrooms: Spoon the Caprese mixture into each mushroom cap, filling them generously.
- Bake the mushrooms: Place the stuffed mushrooms in the oven and bake for 15-20 minutes, or until the mushrooms are tender and the cheese is melted.
- Serve and garnish: Drizzle with extra virgin olive oil if desired and garnish with additional fresh basil leaves. Serve immediately.
Tips for the Perfect Caprese Stuffed Portobello Mushrooms
- Use ripe tomatoes: To get the best flavor, make sure your tomatoes are ripe and juicy.
- Don’t overcook the mushrooms: You want the mushrooms to remain tender and juicy, not dry or rubbery. Keep an eye on them in the oven.
- Experiment with cheese: If you’re not a fan of mozzarella, you can substitute it with goat cheese, feta, or even a vegan cheese alternative for a different twist.
- Add more veggies: Feel free to add other vegetables like zucchini, roasted red peppers, or spinach to the stuffing mix.
- Use a variety of basil: Try using different types of basil, like lemon basil, for an interesting flavor variation.
Variations and Customizations
- Vegan/Plant-Based Version: Swap the mozzarella for a vegan cheese alternative or omit the cheese entirely and add more vegetables or a vegan pesto for richness.
- Gluten-Free: This recipe is naturally gluten-free as it doesn’t contain any gluten-filled ingredients.
- Meat Lovers Option: Add cooked chicken, bacon, or sausage to the Caprese stuffing for a meatier dish.
- Pesto Variation: For an extra burst of flavor, add a tablespoon of pesto (store-bought or homemade) to the filling.
Health Considerations and Nutritional Value
- Low in calories: Portobello mushrooms are low in calories, making this dish a great option for those looking to maintain or lose weight.
- Rich in antioxidants: Tomatoes are an excellent source of antioxidants like lycopene, which is linked to various health benefits, including heart health.
- Protein and calcium: Mozzarella provides a good source of protein and calcium, though the amount may vary depending on the cheese used.
- High in fiber: Portobello mushrooms, tomatoes, and basil are rich in dietary fiber, which is great for digestion and overall health.
- Low-carb: This dish is low in carbohydrates, making it a great option for those following low-carb or keto diets.
FAQ
- Can I prepare the mushrooms ahead of time?
Yes, you can prep the mushrooms and stuff them in advance, then cover and refrigerate them. When you’re ready to serve, simply bake them in the oven until heated through. - Can I freeze Caprese stuffed portobello mushrooms?
It’s not recommended to freeze stuffed mushrooms as the texture of the mushrooms and cheese may change upon thawing. However, you can freeze the stuffing mixture and prepare fresh mushrooms later. - Can I use other mushrooms?
While portobello mushrooms are the best choice for this recipe due to their size and texture, you can experiment with other large mushrooms like shiitake or cremini, though they may need to be cooked differently. - How do I make the mushrooms less watery?
If you’re concerned about excess moisture, you can pre-cook the mushroom caps by baking them for 5-10 minutes before stuffing them to help release some of the water. Be sure to drain any liquid before filling. - Can I add a different type of vinegar?
Absolutely! While balsamic vinegar is traditional, you can substitute it with red wine vinegar, white wine vinegar, or even a flavored vinegar to alter the taste.

Caprese Stuffed Portobello Mushrooms
Ingredients
- 2 sirloin or boneless ribeye steaks roughly 1.5 inches thick
- 1 tablespoon vegetable canola, or grapeseed oil
- salt and pepper to taste
- Chimichurri sauce:
- 1 cup packed fresh flat-leaf Italian parsley minced
- 1/4 cup packed fresh cilantro minced
- 1/2 cup olive oil
- 2-3 tablespoons red wine vinegar
- 1-2 garlic cloves minced
- 1 teaspoon crushed red pepper/chili flakes
- 3/4 teaspoon dried oregano
- Salt to taste
Instructions
- For the chimichurri sauce
- For the chimichurri sauce, finely mince garlic, cilantro, and parsley. Add to a small bowl and stir in the oil, vinegar, oregano, salt, and crushed red pepper flakes. You can also chop in a blender by gently pulsing.
- For the steak
- Preheat the oven to 415°F. Remove the steak from the fridge 30 minutes prior to cooking. This is to bring the steak to room temperature and ensure your cooking times are more accurate. Season all sides liberally with salt and pepper. This can be done while your steak comes to room temp.
- Add 1-2 tablespoons of oil to an oven-safe cast iron skillet and turn the heat up high, allowing the skillet to become very hot. Twirl the pan to distribute oil as it heats. Once the oil starts to smoke, place the porterhouse face down and sear undisturbed for 2 minutes. Flip the steak and sear for an additional 2 minutes. This will give your steak a nice seared edge.
- Transfer your skillet directly to the oven. [WARNING] The skillet may be hot, handle it with oven mitts. For rare, bake for 4 minutes. Medium rare, 5-6 minutes. Medium, 6-7 minutes. Medium well, 8-9 minutes.Remember, depending on the size of the steak, the more or less time it will take. This recipe is ideal for a steak roughly 1.5 inches thick.
- Slice the steak intro strips and serve with chimichurri.