This Guilt-Free, quick, and easy to make Portobello Mushroom Keto Burger is super juicy and looks exactly like a real Burger Bun you would expect from a BBQ evening. Fully Grain-Free, Gluten-Free, Low Carb, and perfect for diabetics, this Portobello Mushroom Recipe together with Ground Beef Keto Burger is a must when you start thinking of grilling time.
Keto Grilling
Ready for that perfect sumer evening when you can finally get together with your family or friends and have the best ever BBQ?
Do not forget to look at our Sugar-Free Marshmallows or Keto Smores Chaffle Recipe to take with you. An make quick and easy grilled shrimp skewers.
Window Keto Shopping
Would you believe most of my recipes ideas come directly from my Window Keto Shopping?
I walk into the shop, mostly groceries or food markets.
I see something and there at that moment, it goes.
The Recipes start popping into my head and all I can think of is quickly get home and make it and take the photo shots.
Because those photos are what gets me most of the time. Those images of Keto Food looking even better than the full-grain and high Carbs food is.
The exact same thing happened when I walked into one of the groceries close to our house.
Portobello Mushroom Keto Burger
I have seen those beautifully shaped big brown mushrooms which immediately gave me an idea of bunless burgers we normally make.
I have immediately in my head seen the picture of this beautiful juicy mushroom bun sprinkled with sesame seeds and looking like a real juicy burger bun which everyone is missing in our lifestyle. And then it went.
Our Portobello Mushroom Keto Burger was born.
All I had to do was make our Bunless Bacon Keto Burger together with Simple Keto Basil Pesto, so I can combine it all together and make a beautiful barbeque evening dinner for my whole family.
Together with our Crispy Keto French Fries you are right in.
Did you know Portobello Mushrooms are not a specific type of Mushroom?
Portobello mushrooms are round mushrooms commonly seen in Europe and North America, white and brown in color, and in different sizes.
They could also be called Swiss brown mushrooms, cremini/crimini mushroom, common mushroom, white mushroom, button mushroom, cultivated mushroom, table mushroom, champignon mushroom, Roman brown mushroom, Italian brown mushroom, chestnut mushroom, or baby Bella.
And that is exactly what got me completely confused. When I bought those portobello mushrooms, I did not look at the name on the package.
Only after I opened the box to clean the mushrooms, I realized they are called Champignons.
At that moment, I had no idea what I had bought, and I was not sure what I was going to call them. For a minute, I believed Portobello Mushrooms were some sort of special type, which were not available here.
Only after research, I had to do it on the computer, I have found out that it is just the name of the mushrooms and not a particular type.
Did you know that Portobello Mushrooms have got more Potassium than bananas have?
Mushrooms are one of the best vegetables to cook within our lifestyle. They are not only low in carbohydrates but as well on calories.
The flavor you get from mushrooms gives an unforgettable twist to any meal you are preparing with them.
One cup of mushrooms, depending on the exact type, contains only 15 Calories, 2-3g of carb of which 1g is Fiber, and approximately 2g of Protein.
Those beautiful big dark brown portobello mushrooms are not only tasty, healthy, and with really few calories and carbohydrates.
They also contain a lot of moisture.
To reduce the moisture from portobello mushrooms is to cut the stem and with your spoon or hands scrape the dark grills underneath.
That is where most of the moisture is and it will help you to get the portobello mushrooms buns more uniformed.
As you can see in the video, to make a keto bun out of mushrooms or portobello mushroom is very easy.
All you have to do is get beautifully looking dark brown mushrooms, which you grill to medium-rare and you can decorate.
To make it even more real bun-like looking, you can sprinkle it with sesame seeds as I have done as well.
You can also brush up the top off the portobello buns with barbecue sauce so the sesame seeds hold even better.
To grill portobello mushroom buns is pretty easy.
As you see on the video I have used an indoor grill, but you can also use an outdoor grill without any issues.
For my indoor grill, I have two choices where I can either press the button and the top with the grill plates to give the mushrooms a beautiful grill-looking line.
But for the top portobello bun, I have decided I do not want those grills so the bun looks more like real wheat or flour bun.
I have just closed the grill in a way that the top is not touching the buns.
The same you can do with an outdoor grill where you just close the grill without turning it.
Any of the mushrooms once you place them on the grill will shrink.
To make them like a real bund looking, make sure you grill them only halfway or at least the top of the mushroom.
How to make Portobello Mushroom Keto Burger?
Kitchen gadgets you might need:
- Outdoor or indoor grill
- Bowl for mixing the burger
Ingredients needed:
- Portobello Mushrooms
- Keto Burger
- Basil Pesto
- Salad leaves
- Slice of Tomato
- Slice of cheese
- Sesame Seeds
*Exact measurements are listed in the recipe card below.
STEP BY STEP INSTRUCTIONS ON MAKING THE BEST PORTOBELLO MUSHROOM KETO BURGER
First Step: Prepare and wash mushrooms
The first step for making the best Portobello Mushroom Keto Buns is to pick the best looking portobello mushrooms in size as well as shape.
Clean them well and fully dry.
At the same time decide which mushrooms would go on top of the burger as a bun.
Make sure those once will get grilled only halfway.
Second Step: Clean the dark Grills and stem
Take out the stem of each mushroom and with your spoon or hands clean all of the dark grills underneath. Those are the ones that retain most of the moisture and are the best to just clean them.
Do not throw the stems or the grills. You can always add them to your keto burger mixture.
Third Step: Place Mushrooms on the Grill
Place all of the mushrooms on the grill.
As mushrooms do shrink while grilling, I would suggest grilling the mushrooms first, and depending on the size they end up to, you can then shape your Burgers so they all fit once put together.
Fourth Step: Cover
Once you place all of the mushrooms on the grill, cover it with the top. Make sure the top of the grill does not touch the mushrooms otherwise you will get the lines which you do not really want for beautifully looking buns.
Fifth Step: Start with the base
Once the mushrooms are done you can start assembling the whole keto portobello mushroom burger.
Decide on the most beautiful ones and place them aside.
Pick not so good looking mushrooms, which you can use as the base.
Sixth Step: add Veggies and Burger
Once you have the base portobello mushroom on a plate or a wooden serving board, you can start adding your veggies, salad leaves, tomato slices, cheese, bacon, or whatever you wish.
As you can see I have also added a little bit of basil pesto to give an extra Italian touch to it.
Seventh Step: Top with Portobello Bun
The last step is to top it up with your most beautiful portobello bun. Pick the one you like the most, place it on top of the burger and sprinkle with sesame seeds.
For the sesame seeds to hold, you can brush up the top of the mushroom with a bit of Barbecue sauce.
Tips and Tricks:
- Bake your mushrooms first as they shrink and then form your burger bun to the size.
- To get the beautiful Portobello mushroom bun, grill them only halfway.
- For the sesame seeds to hold better, you can brush up the top of the portobello mushroom with a barbecue sauce at the end.
FREQUENTLY ASKED QUESTIONS AND ANSWERS
Can you store Portobello Mushroom Keto Burger?
Although it is best to eat your Portobello mushroom Keto Burger directly when fresh and ready, you can also store if you decide to.
Just place them into the sealable container and keep it in the fridge for 1 to 2 days. Not more.
Can you freeze the whole Keto Burger?
You can certainly freeze any keto burger, but I would suggest doing that separately.
I would just freeze the actual burger, the Ground Beef Keto mixture, and not the mushrooms.
Fresh Portobello mushrooms have a beautiful shape which ones frozen will destroy.
After you will unfreeze the Portobello mushrooms, they will not stay as beautifully looking as fresh.
More Mushroom Recipes
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Portobello Mushroom Keto Burger
Equipment
- 1 Outdoor or indoor grill
Ingredients
- Portobello Mushrooms
- Keto Burger
- Basil Pesto
- Salad leaves
- Slice of Tomato
- Slice of Cheese
- Sesame Seeds
Instructions
- Prepare and wash mushrooms. Clean them well and fully dry.
- Take out the stem of each mushroom and with your spoon or hands clean all of the dark grills underneath.
- Place all of the mushrooms on the grill.
- Depending on what type of Grill you have, make sure the top of the grill does not touch the mushrooms otherwise you will get the lines which you do not really want for beautifully looking buns.
- Once the mushrooms are done you can start assembling the whole keto portobello mushroom burger.
- Place one Portobello as a base on a plate
- Add all of the vegetabels you like, salad, tomato, cheese, burger etc
- Top with Portobello Bun
- Brush up with BBQ sauce and sprinkle with Sesame Seeds
Video
Notes
- Bake your mushrooms first as they shrink and then form your burger bun to the size.
- To get the beautiful Portobello mushroom bun, grill them only halfway.
- For the sesame seeds to hold better, you can brush up the top of the portobello mushroom with a barbecue sauce at the end.
Nutrition
Disclaimer
Please note that nutrient values are estimates only. Variations can occur due to product availability and manner of food preparation. Nutrition may vary based on methods of origin, preparation, freshness of ingredients, and other factors.
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Ground Beef Keto Recipes
Simple and fast Keto recipe for ground beef and minced meat. Perfect for Keto fast food, always low carb, gluten-free, and grain-free.
Can I bake the portobello mushrooms instead of grilling them?
Sure you can.