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.
Recipe by Food Bloggers of Canada at