What do mushrooms and mozzarella have in common? When they team up they take an ordinary burger to the next level! This Mozzarella Mushroom Burger with Caramelized Onions have a bit of a surprise - because the mushrooms are blended right into the beef making for a bigger, juicer, tastier burger patty. Top the whole thing with caramelized onions and you're in burger heaven! And as a bonus, we've included 4 more mushroom burger recipes.

Mozzarella Mushroom Burger with Caramelized Onions | Food Bloggers of Canada

Sponsored by Mushrooms Canada.

Grilling season is here and that means burgers! The burger is so versatile - with countless topping options and protein choices you can feed everyone in your crowd from full on carnivores to vegetarians and vegans with endless possibilities.

And here's one more delicious possibility to add to your burger repertoire - the blended mushroom burger!  That's right - finely chopped mushrooms mixed right into your burger patty!  It adds extra moisture for a really juicy burger, not to mention some added protein, flavour and it's a super sneaky way to load up your family with and extra serving of veggies (they won't even notice, we promise!).

Another bonus of the blended mushroom burger? By blending in those mushrooms you're extending your protein budget too, making those all important grocery dollars stretch even further.

You can blend your mushrooms in with beef, lamb, turkey, chicken and even your vegetarian patties giving you even more burger options this summer.  To get you started, we put the challenge to FBC Member James at From James to Jamie to come up with a cracking good summer burger recipe and he delivered with this Fresh Mozzarella Blended Mushroom Burger topped with sweet caramelized onions (can you smell those onions already??)

Mozzarella Mushroom Burger | Food Bloggers of Canada

Fresh Mozzarella Blended Mushroom Burger with Caramelized Onions

recipe and photos by James Seaton 

There are few burger combinations as classic as mushrooms and mozzarella. Using the Blend and Extend concept, these Fresh Mozzarella Blended Mushroom Burgers with Caramelized Onions are a new take on an old favourite.

Fresh Mozzarella Blended Mushroom Burger with Caramelized Onions
Prep time
Cook time
Total time
  • 200 g cremini mushrooms
  • 400 g extra lean ground beef
  • ½ tsp salt
  • dash of pepper
  • Medium yellow onion, halved and sliced
  • 1 tbsp butter
  • 1 tbsp balsamic vinegar
  • Extra virgin olive oil
  • 4 brioche buns
  • 4–8 slices fresh mozzarella
  • Mayonnaise
  • BBQ sauce (optional)
  1. Blend/pulse the mushrooms until fine in a food processor.
  2. Cook the mushrooms on a griddle (or in a large frying pan) over medium heat for about 4–5 minutes, stirring often. Set aside to cool.
  3. Give the griddle a quick wipe-down, turn it down to low-medium, and toss on the sliced onions along with the butter. Cook for about 15–20 minutes, stirring often, until soft and golden.
  4. While the onions are cooking and once the mushrooms have cooled, combine the mushrooms together with the ground beef in a prep bowl. Stir until well-combined and form into four patties. Place the patties on a plate, cover, and place in the fridge.
  5. Once the onions are the right texture and colour, add the balsamic vinegar and cook another two minutes, stirring often. Remove from the griddle and set aside.
  6. Wipe down the griddle, turn it back up to medium, then add a small lug of oil and spread it around.
  7. Combine together the salt and pepper in a small prep bowl, then sprinkle roughly half of the seasoning on the tops of your burgers. Place the burgers on the griddle with the seasoned side facing down.
  8. After about 4 minutes, season the tops of the burgers with the other half of the salt/pepper mix, then flip. Cook an additional 3–5 minutes until no pink remains.
  9. Construct your burgers by applying mayo to both sides of the buns, then adding the patties and topping with 1–2 slices of fresh mozzarella and the caramelized onions.

More Blend and Extend Burger Ideas


You are subscribing to the FBC Food Lovers Newsletter.
You can unsubscribe any time!
Click Me

Leave a Reply

Your email address will not be published. Required fields are marked *

Rate this recipe:  

This site uses Akismet to reduce spam. Learn how your comment data is processed.