porotobellow Bun Cheeseburger final
Keto Recipes


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Often a great alternative to meat for its meaty and tasty texture, portobello mushrooms are also a great alternative to burger buns, especially if you’re on a low-carb, ketogenic diet.
Mushrooms are not technically plants (as is sometimes thought of in the food world), but instead, they belong to the fungus kingdom. However, like vegetables, portobello mushrooms offer an array of essential nutrients and are an excellent addition to any diet.

Consumption of whole, unprocessed foods such as mushrooms is associated with a lower risk of a number of health conditions, including obesity, diabetes, and heart disease. In addition, portobello mushrooms contain two types of dietary fiber (beta-glucans and chitin), which play an important role in weight management. With the help of these dietary fiber, motivation increases and appetite decreases.

Health Benefits:

  • Low in calories
  • Contains disease-fighting antioxidants
  • Helps combat inflammation
  • Great source of fiber
  • Promotes heart health
  • Great source of B-vitamins
  • Boosts immunity

Fun Fact: Portobello mushrooms are just extremely large cremini-like mushrooms and can grow to be the size of a regular hamburger-no wonder they’re perfect for this recipe! And an added bonus, one portobello mushroom is more potassium-rich than a banana. This can help you with any ketosis side effects (keto flu), as a common mineral deficiency, not just with low-carb diets, is potassium.


Even if bunless burgers aren’t your thing, these Portobello Bun Cheeseburgers will give you a delicious, nutrient-dense, and satiating meal everyone can enjoy!

Duration: –

Preparation Time : 5 minutes | Cook Time : 15 minutes | Total Time : 20 minutes | Yield : 6


  • 1 lb. grassfed 80/20 ground beef
  • 1 tbsp Worcestershire sauce
  • 1 tsp pink Himalayan salt
  • 1 tsp black pepper
  • 1 tbsp avocado oil
  • 6 portobello mushroom caps, destemmed, rinsed and dabbed dry
  • 6 slices sharp cheddar cheese


  • In a bowl, combine ground beef, Worcestershire sauce, salt, and pepper.
  • Form beef into burger patties.
  • In a large pan, heat avocado oil over medium heat. Add portobello mushroom caps and cook for about 3-4 minutes on each side. Remove from heat.
  • In the same pan, cook burger patties for 4 minutes on one side and 5 minutes on the other side, or until desired doneness is achieved. Add cheese to top of burgers and cover with a lid and allow cheese to melt, about 1 minute.
  • Layer one portobello mushroom cap, then cheeseburger, desired garnishes, and top with remaining portobello mushroom cap.
  • Enjoy!

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