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1
Fry the burgers over medium high heat until cooked, about 4 minutes each side; set aside.
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2
put about 1 tablespoon of butter in the pan and add thinly sliced onion sprinkle with about 1/2 Worcestershire sauce and sugar and a pinch or so of salt.
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3
Saute until caramelized.
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4
about 5-10 minutes Set aside.
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5
Add some more butter to the pan place the mushrooms cap side down and sprinkle with remaining Worcestershire sauce cook until browned and flip to cook the other side.
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6
about 3-5 minutes each side.
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7
When mushrooms are done you may begin assembly place one mushroom cap side down on serving ( microwave safe) plate.
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8
Set burger on top of mushroom.
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9
cover burger with slices of cheese and the barbecue sauce.
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10
While assembling the burger saute the tomato in same pan about 3 minutes each side.
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11
when cooked on both sides carefully place on top of cheese and burger.
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12
Top with the caramelized onions and finally the second mushroom bun cap side up this time.
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13
Put burger in the microwave and heat for 45-60 seconds to reheat burger and melt the cheeses slightly.
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14
Serve immediately.
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15
Note: Unlike other burgers, this will need a knife and fork.
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16
I'm not certain until the nutritional stats are up but I suspect this recipe might be good for the low carbers.
