Burger with Mushroom and Onions

I've been eating burgers that Nick creates for more then 2 years now.  I can say with extreme confidence....that they are freaking awesome!  We like our burgers and are sad to say that most the gourmet burger joints that have popped up in Toronto in the past year or so have been very disappointing.  The only place that continue to have decent burgers is Webers (I will post review later), and that's nowhere near Toronto, and nor is it gourmet in any sense of the word.  

Nick always gets requests to make these for friends and family.  They are so popular that he get's slightly annoyed when everyone always seems to request burgers and baked potato wedges (recipe here)....but I guess that's just proof of how great his burgers are.  The addition of sauteed sweet white onions and meaty portabello just takes it over the top!  :-)

Burger with Mushroom and Onions

Serves: Makes 4 Large burgers

approx prep time: 20min

approx cook time: 15min

INGREDIENTS (Makes 4 burgers): 

- 2 1/4 lb Lean ground beef

- 6 slices of Thick Sliced Bacon (I prefer PC Old Fashioned Thick Sliced bacon), or 12 slices of the regular thin bacon.

- 1/3 of a large sweet white onion, finely diced

- 2/3 of a large sweet white onion, sliced.

-  1 large portobello mushroom, sliced

- 1/4 cup of diced sweet pickles or gherkins 

- 2 tbsp Montreal Steak Spice

-1.5 cups of shredded Cheddar Cheese (I prefer extra old)

- Toppings of choice (Pickles, Tomato, etc..)

- 4 large kaiser rolls

HOW TO MAKE IT:

- Heat up a non stick frying pan with a little dab of olive oil.

-  Add sliced onions and after a minute, add the sliced portobello mushrooms and sautee till brown, and set aside.

- Fry bacon in a cast iron pan on medium heat till crispy, set on a paper towel to drain and set aside.
- Mix ground beef, diced onion, diced pickles and steak spice thoroughly
- Shape beef mixture into 4 patties, roughly 1" thick.
- Cook patties to desired doneness in a frying pan, on an indoor grill or BBQ.
- Serve patty with bacon, shredded cheese, and topped with sauteed onion and mushrooms on a freshly sliced Kaiser of choice.