My grilled portobello burgers are topped with creamy havarti cheese, served with lettuce and tomato on a fluffy bun and drizzle with house sauce. Tons of flavor and super satisfying – these are the best summer meal!

Burger season is here!

grilled portobello burgers

These portobello burgers are marinated and grilled until tender, smoky and charred. They’re topped with havarti cheese and served with my howsweeteats house sauce. Lettuce, tomato, bun, done! 

grilled portobello burgers

I’m on a major sandwich kick right now! Just in time for memorial day weekend and the start of summer. If you don’t feel like making my pimento cheese grilled chicken sandwiches, go for the meatless version!

Mushrooms burgers take on the flavor of whatever ingredients they’re paired with. Marinating them gives them a big tangy boost and when they are drizzle with my house sauce… oooooh eeeee. 

Best meal ever. 

grilled portobello burgers

The burgers are ridiculously satisfying and smooth. You can make them into slider sized burgers or use the large portobellos like I show here. 

house sauce

Over a decade ago I had a huge infatuation with portobello burgers. I discovered them and absolutely fell head over heels

I love the flavor, the texture – everything!

Then, I got more into bean-based burgers. These veggie burgers are out of this world. The best I’ve ever had!

grilled portobello burgers

And just recently, I shared my black bean smashburgers. Oh my gosh. The next level was unlocked… those are crispy, crunchy, satisfying and taste amazing. 

Originally, I wanted to make portobello smashburgers. I tried a few times and it just didn’t give me the result I was craving – those crispy edges, that paper thin burger, the texture I love. 

grilled portobello burgers

Instead, I’ve been making my grilled portobello burgers and topping them with havarti cheese until it gets melty. The mushrooms are marinated and infused with lots of flavor, and then grilled until smoky and charred and cheesy! 

I.love.them. 

grilled portobello burgers

And they come together so fast! Winning all around.

grilled portobello burgers

Grilled Portobello Burgers with House Sauce

Portobello Burgers with House Sauce

My grilled portobello burgers are topped with creamy havarti cheese, served with lettuce and tomato on a fluffy bun and drizzle with house sauce. Tons of flavor and super satisfying - these are the best summer meal!
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Ingredients

house sauce

Instructions 

  • Clean the mushrooms and remove the stem. Score the top of the mushrooms - I like to do a criss cross pattern. You want the marinade to soak into the mushrooms!
  • Place the mushrooms in a dish in a single layer. Whisk together the olive oil, vinegar, worcestershire, garlic powder and a big pinch of salt and pepper. Pour the mixture over the mushrooms.
  • Flip the mushrooms a few times so all sides are coated. Marinate for 30 minutes, flipping once or twice during the marinade time.
  • Preheat the grill to medium-high. I like mine to be around 450-500 degrees F when I’m ready to grill. While it preheats, make the house sauce.
  • When the grill is hot enough, make the burgers. Remove the mushrooms from the marinade and let the rest drip into the pan. Place the mushrooms on the grates. Cover and grill for 5 minutes.
  • Gently flip and grill for another 3 to 4 minutes. Add a slice of cheese on top of each mushroom. Cover and grill for another minute.
  • To assemble the burgers, top a bun with shredded lettuce. Place the portobello cap on top. Drizzle with the house sauce and top with a slice of tomato. Serve!

house sauce

  • Whisk all ingredients together until creamy and smooth and combined. Serve for dipping or as a drizzle sauce. Stays great in the fridge for a week.
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grilled portobello burgers

And… favorite!