Fry your hamburger in a fry pan for about 5 minutes on both sides.
Cook your round pieces of bacon by placing them in a circle on a microwaveable tray. Cover with paper towels and cook for roughly 1 minute per piece of bacon or to your desired texture.
Asseble your burger the way you like it. I used red onions, tomatoes, romaine, bacon and blue cheese dressing.
Nutritional information for 1 burger, 2 mushrooms, 2 bacon
431 cals / 31.8g fat / 3.6g carbs / 2.7g fiber / 30.2g protein = 0.9g net carbs