Preheat oven to 400 degrees F (200 degrees C).
Season the Large Portobello Mushroom (2) with Salt and Pepper (to taste) and grill for 10 minutes.
Cut the Pumpkin (1 cup) into fries shape.
Season with Salt and Pepper (to taste) and coat them in Corn Starch (1 tablespoon) or coconut flour.
Toss the pumpkin fries in Extra-Virgin Olive Oil (1 tablespoon) and bake them in the preheated oven for about 20-25 minutes until nice and crispy.
Gather the Tomato (2 slice), Radish (1), Cucumber (1/2), Arugula (to taste), and Avocado (1/4).
Grill the Beef Patty (1) on a hot pan.
Now, put together your low-carb burger, and enjoy!