Balsamic Portobello Burger
Grilling adds a hint of smoky flavor and brings out the juiciness of the mushrooms in this Balsamic Portobello Burger.

Ok, it's confession time.
Neither of us had ever had a portobello mushroom burger before this little experiment.
Ever.
But, my suspicion is that many of you are probably sitting there right now thinking that you've never had one either.

A Balsamic Portobello Mushroom Burger
If you're like us, you're thinking, "Ok, from the pictures it kind of looks like a legit burger. And sure, it's a mushroom big enough to fit on a burger bun. But, why would I bother? It's a mushroom for Pete's sake! A mushroom between two slices of bread!"
And yes, we would agree, this is not a crumbly, beefy, 'give-me-my-meat' kind of burger.
But, it is probably the juiciest 'burger' you will ever sink your teeth into.
And, if you're in the 'charcoal grill only' camp, all that beautiful smoky flavor of the charcoal will magically infuse themselves into every single, chin-wiping bite.
This is what veggie burgers are all about.
Balsamic Portobello Burgers
Ingredients
- 4 tablespoon balsamic vinegar
- 4 tablespoon olive oil
- 4 garlic cloves, minced
- ¼ teaspoon ground black pepper
- 4 Portobello mushrooms (look for mushrooms that are thicker with a smaller diameter)
- 4 Sourdough rolls
- Optional toppings: lettuce, tomato, red onion
Instructions
- Combine vinegar, oil, garlic, and pepper in a small bowl.
- Place portobellos,upside down, in a shallow bowl and pour marinade over them. Marinate for 30 minutes while you heat the grill.
- Once the grill is nice and hot, place mushrooms, top-down on the grill grates. Cover, and grill mushrooms for 2-3 minutes, just until marks begin to show.
- Flip mushrooms and grill the second side for 2-3 minutes.
- When mushrooms are nice and hot, place on a split sourdough roll and top with additional veggies as desired.
- Be sure to have an extra napkin handy, these babies get juicy!

Sarah founded Curious in 2010 as a way to save her recipe creations and share culinary experiences. Her love for cultural cuisines was instilled early by her French Canadian Grandmother. Her experience in the kitchen and in recipe development comes from over 10 years working in professional kitchens. She has traveled extensively and enjoys bringing the flavors of her travels back to create easy-to-make recipes.





This does look great! I've made portabella mushrooms before as they are one of my favorite things to grill- but never thought to put it on a burger. Sounds delicious!
As a vegetarian I think I much prefer portobello burgers to mass-produced veggie burgers. (I'll make an exception for homemade veggie burgers, though!) And you're right, portobellos are SO juicy!
Delicious! I have some mushies that I need to cook up - this might just be the perfect recipe for them
I've always wanted to try making veggie burgers but have yet to. However, I'm a little skeptical about whole portobellos. I can't imagine biting into a whole portobello haha. I'd probably slice it up 🙂
Wow! This looks amazing! :0)
I love grilled portobellas with balsamic. Leftovers go on a salad the next day!
I'd much rather eat your gorgeous mushroom burger than any fake meat burger! It looks amazing!!!
Mmmmm...I love portobellos...these burgers sound great with the balsamic!
I'm still warming up to mushrooms, so I don't think I can manager a portobello burger, but you are right it DOES look like a beef burger!
Your suspicions are right - I've never had a portobello mushroom burger before either! I think if it were grilled with all that fabulous smoky flavour, I wouldn't mind trying it out. Yay, no uncomfortable meat sweats after eating this 😉 Your burgers look delicious!
Thanks so much for linking this up at our Super Sunday Party! It looks DELISH! Hope to see you next week 😉 http://whoneedsacape.com/2013/06/super-sunday-party-1/
I love portobello burgers, and this one looks especially divine! I'm sure the balsamic is an amazing addition!
Oh my! These look incredible. This is a recipe my daughter would love. I'll have to try these soon!
Such a delicious veggie burger option!I love the Balsamic in here and cannot wait to make these :)They looks so delish!
OMG! I really thought it was a burger, burger! I'm impressed! I'm not sure if I would like it, not being a mushroom fan, but it's worth a shot! I just love this!