Grilled Portobello Burger
When I first made these Grilled Portobello Burgers, I was looking for something hearty yet light for a summer barbecue. The sun was shining, and the aroma of grilled vegetables filled the air, making it the perfect day to experiment with flavors. As I prepared the portobello mushrooms, I couldn’t help but feel excited about the meaty texture they would bring to the table. Each bite promised a great blend of smokiness from the grill and the freshness of the toppings. These are not just burgers; they are a celebration of summer produce and good company.
Recipe Snapshot
40 mins
25 mins
15 mins
Medium
420 kcal
10 g
Keto, Whole30, Gluten-Free
30 g
Chef’s Knife, Blender, Baking Sheet
Why This Grilled Portobello Burger Is So Good
Flavorful and Satisfying
One of the reasons I absolutely love Grilled Portobello Burgers is the depth of flavor they offer. The portobello mushrooms marinate beautifully in the balsamic vinegar and olive oil, infusing them with a rich taste that’s hard to resist. It’s a burger that doesn’t sacrifice on flavor just because it’s meatless.
Quick and Easy to Prepare
This recipe is incredibly quick to whip up, making it perfect for those busy weeknights or spontaneous gatherings. With just a few simple ingredients, you can have a delicious meal ready in no time. I love how these burgers can be made in under an hour, letting you enjoy more time with friends and family at your summer get-togethers.
Healthy Yet Indulgent
Who says you can’t indulge while eating healthy? These burgers are packed with nutrients from the eggplant, arugula, and the various vegetables used. They provide a fulfilling meal without the heaviness often associated with traditional burgers.
Perfect for All Occasions
No matter if it’s a casual lunch or an elegant dinner, these Grilled Portobello Burgers fit right in. They’re sophisticated enough for guests but easy enough for casual family meals. You can dress them up with gourmet toppings or keep them simple; either way, they shine.
Great for Everyone
Whether you’re a meat lover or a vegetarian, these burgers offer the best of both worlds. They’re hearty enough to satisfy meat lovers while being a delightful option for vegetarians and vegans alike. Everyone at your table will leave happy!
Ingredients You’ll Need for Grilled Portobello Burger

The ingredients for these burgers come together in a delightful way. Each one plays a crucial role in creating a harmonious flavor and texture. The star of the show is the portobello mushrooms, which bring a meaty, satisfying bite. Pair them with eggplant, arugula, and roasted red bell pepper for freshness, and you’ll create a balanced dish that’s both delicious and healthy.
- 2 large portobello mushroom caps: These serve as the base of your burger, offering a wonderful texture and flavor.
- 3 tablespoons olive oil: This helps in marinating and adds richness to the dish.
- 3 tablespoons balsamic vinegar: For a tangy, sweet flavor that enhances the mushrooms.
- Pinch sea salt: Essential for bringing out the flavors in all your ingredients.
- 1 small eggplant, cut into ¼- to ½-inch rounds: Adds a unique texture and flavor.
- 1 roasted red bell pepper: Provides sweetness and color.
- ¼ small red onion, sliced: Offers a nice crunch and sharpness.
- ¼ cup pesto sauce: A delightful spread that adds depth and herbaceousness.
- Handful baby arugula: Adds freshness and a peppery bite.
- 2 burger buns of choice, toasted: The perfect vessel for all your delicious fillings.
- 2 slices havarti cheese: Melts beautifully and adds creaminess.
The Process for Making Grilled Portobello Burger

Making these Grilled Portobello Burgers is a fun and straightforward process that anyone can master. I love how you can really get involved with the flavors as you prepare each component. Let me guide you through it step by step to ensure you achieve the most delightful results.
- Start by preparing the marinade for the mushrooms. In a small blender, combine the olive oil and balsamic vinegar. Blend well until smooth. This mixture will not only enhance the flavor of the portobello mushrooms but also help them become tender and juicy.
- Next, wash and pat dry the portobello caps. It’s essential to remove any excess moisture to allow for better grilling. Transfer the mushrooms to a sealable container or a zip-lock bag, and pour the balsamic marinade over them. Make sure they’re well coated. Allow them to marinate for at least 15 minutes, but if you have the time, let them soak for up to 1 hour for maximum flavor.
- While the mushrooms are marinating, prepare the eggplant. Heat your grill to medium. Brush the eggplant slices with olive oil and sprinkle with a pinch of sea salt and pepper. This will enhance their natural flavor and help with grilling.
- Once the grill is hot, place the marinated portobello mushrooms and eggplant slices on the grill. Cover and cook them, keeping an eye on them. For the eggplant, grill for about 2 to 3 minutes until grill marks appear. The portobello mushrooms will take about 5 to 7 minutes. You’ll know they’re ready to flip when they release easily from the grill.
- After flipping the vegetables, continue cooking until they are juicy, tender, and cooked through. This should take another 2 to 3 minutes for the eggplant and about 5 to 7 minutes for the mushrooms. Keep checking to avoid overcooking.
- Once cooked, transfer the vegetables to a plate. Meanwhile, toast your buns on the grill. If you’re using havarti cheese, add a slice on each bun just as they finish to allow the cheese to melt slightly.
- Now it’s time to assemble your burgers! On each toasted bun, layer a grilled portobello mushroom, a few slices of eggplant, roasted red bell pepper, slices of red onion, and a handful of arugula. The colors will pop, making it look inviting and delicious.
- Lastly, drizzle some pesto sauce on top according to your preference. This adds a fresh herbaceous note that ties all the flavors together. Serve immediately and enjoy your delicious homemade Grilled Portobello Burgers!
Things Worth Knowing
- Marinade Time: Allowing the portobello mushrooms to marinate for longer enhances their flavor. If time permits, try to marinate them for an hour.
- Grilling Technique: Always preheat your grill. This helps achieve those lovely grill marks and prevents sticking.
- Vegetable Selection: Feel free to experiment with other vegetables like zucchini or bell peppers. They add variety to your burger.
- Serving Suggestions: Serve these burgers with a side of sweet potato fries or a fresh salad for a complete meal.
Recipe Tips about Grilled Portobello Burger

To make the most of your Grilled Portobello Burgers, here are some helpful tips. These suggestions will not only guide you through the cooking process but also enhance your overall experience.
- Storage: Store leftover burgers in an airtight container in the fridge for up to three days. They can be enjoyed cold or reheated.
- Freezing: Yes, you can freeze the grilled portobello mushrooms and eggplant separately. Ensure they are wrapped tightly to avoid freezer burn.
- Pairing: These burgers pair wonderfully with a crisp salad or grilled corn on the cob for a summer-inspired meal.
- Customizing Toppings: Feel free to top your burgers with sliced avocado, jalapeños, or a drizzle of ranch dressing for added flavor.
- Using Different Buns: Experiment with different types of buns such as whole wheat, ciabatta, or gluten-free options to suit your taste.
Accompaniments for Grilled Portobello Burger
When it comes to serving Grilled Portobello Burgers, the options are abundant. Here are some delightful accompaniments to consider:
- Salads: A fresh garden salad or a vibrant coleslaw works great alongside your burgers.
- Grilled Vegetables: Grilled zucchini, asparagus, or even corn on the cob can add a smoky flavor that complements the burgers.
- Fries: Sweet potato fries or classic French fries are always a hit at any barbecue.
- Dips: Consider a side of hummus or tzatziki for dipping your grilled veggies.
- Seasonal Pairings: During summer, serve these burgers with fresh watermelon or a cool cucumber salad.
- Occasions: Perfect for summer cookouts, family gatherings, or even a simple weeknight dinner.
FAQ
Conclusion
The Grilled Portobello Burger is truly a delightful dish that captures the essence of summer with its fresh flavors. Its satisfying texture and vibrant ingredients make it a must-try for anyone seeking a hearty yet healthy meal. I encourage you to give this recipe a go, as it offers a delicious way to enjoy a meatless option that’s still packed with flavor. So fire up that grill and enjoy a taste of summer in every bite!

Grilled Portobello Burger
Equipment
- Chef's Knife
- Blender
- Baking Sheet
Ingredients
- 2 large portobello mushroom caps
- 3 tablespoons olive oil
- 3 tablespoons balsamic vinegar
- Pinch sea salt
- 1 small eggplant cut into ¼- to ½-inch rounds
- 1 roasted red bell pepper I used store-bought
- ¼ small red onion sliced
- ¼ cup pesto sauce
- Handful baby arugula
- 2 burger buns of choice toasted
- 2 slices havarti cheese
Instructions
- Add the olive oil and balsamic vinegar to a small blender and blend well until smooth.
- Wash and pat dry the portobello caps and transfer them to a sealable container or zip-lock bag along with the balsamic marinade. Allow the mushrooms to marinate at least 15 minutes, up to 1 hour.
- Heat the grill to medium and brush the eggplant slices with olive oil and sprinkle with salt and pepper.
- Place the portobello mushrooms and the eggplant on the hot grill and cover. Cook until grill marks appear, about 2 to 3 minutes for the eggplant and about 5 to 7 minutes for the mushrooms.
- Flip and continue cooking until vegetables are juicy, tender, and cooked through, about another 2 to 3 minutes for the eggplant and 5 to 7 minutes for the mushrooms. Transfer vegetables to a plate.
- Toast two buns with havarti cheese and layer with a grilled portobello mushroom, a few slices of eggplant, roasted red bell pepper, red onion, and arugula.
- Drizzle on desired amount of pesto sauce and serve.
Notes
- Tip 1: Store leftover burgers in an airtight container in the fridge for up to three days. They can be enjoyed cold or reheated.
- Tip 2: Yes, you can freeze the grilled portobello mushrooms and eggplant separately. Ensure they are wrapped tightly to avoid freezer burn.
- Tip 3: These burgers pair wonderfully with a crisp salad or grilled corn on the cob for a summer-inspired meal.
- Tip 4: Feel free to top your burgers with sliced avocado, jalapeños, or a drizzle of ranch dressing for added flavor.
- Tip 5: Experiment with different types of buns such as whole wheat, ciabatta, or gluten-free options to suit your taste.


