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Vegetarian Keto Burgers

4.6 stars, average of 106 ratings

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I know that people who don't eat meat find it more difficult to stick with a low-carb, keto diet. If you want to learn more, I have discussed vegetarian and vegan keto diets in this post.

This recipe is a great vegetarian option and even meat-eaters will like it. I used my Keto Buns recipe to make these burgers. I promise you they taste as delicious as they look!

The burger buns are using our popular keto bread recipe that includes psyllium which is zero carb and perfect for keto baking. If you can't find psyllium, try these buns instead.

More Burger Recipes

Hands-on Overall

Serving size 1 burger

Allergy information for Vegetarian Keto Burgers

✔  Gluten free
✔  Pork free
✔  Avocado free
✔  Fish free
✔  Shellfish free
Pescatarian
Vegetarian

Nutritional values (per serving, 1 burger)

Net carbs9.1 grams
Protein23.3 grams
Fat55.2 grams
Calories638 kcal
Calories from carbs 6%, protein 15%, fat 79%
Total carbs19.2 gramsFiber10.1 gramsSugars4.4 gramsSaturated fat18.5 gramsSodium896 mg(39% RDA)Magnesium116 mg(29% RDA)Potassium870 mg(44% EMR)

Ingredients (makes 2 servings)

Marinated & grilled mushrooms:
  • 2 medium large flat mushrooms such as Portobello (150 g/ 5.3 oz)
  • 1 tbsp ghee or virgin coconut oil (15 ml)
  • 1-2 tbsp freshly chopped basil or 1 tsp dried basil
  • 1 tbsp freshly chopped oregano or 1/2 tsp dried oregano
  • 1 clove garlic, crushed
  • pinch of sea salt and ground black pepper
Serve with:

Instructions

  1. Make the Ultimate Keto Buns. Prepare the mushrooms for marinating. Season with salt and pepper, add crushed garlic and freshly chopped herbs and ghee, preferably melted. Keep some of the ghee for frying the eggs.
  2. Keep the mushrooms at room temperature and marinate for up to an hour. Although marinating is highly recommended, you can skip it if you don't have time. Vegetarian Keto Burgers
  3. Place the mushrooms top side up on a hot griddle pan or a regular pan. Cook over a medium-high heat for about 5 minutes. Then, flip on the other side and cook for 5 more minutes. Vegetarian Keto Burgers
  4. Take off the heat. Flip back on the top side and top each of the mushrooms with cheese slices. Just before serving, place under a broiler for a few minutes until the cheese has melted. Vegetarian Keto Burgers
  5. Meanwhile, fry the eggs on the remaining ghee. You can use pancake molds to create perfect shapes for the burgers. Cook the eggs until the egg white is opaque and the yolks still runny. Then, take off the heat. Vegetarian Keto Burgers
  6. Cut the buns in half and place each halve, cut side down on a hot griddle pan and cook for 2-3 minutes until crispy. Vegetarian Keto Burgers
  7. Start assembling the burgers by adding a tablespoon of mayo on each of the keto bun halves. Top with the Portobello mushrooms. Vegetarian Keto Burgers
  8. Add fried eggs a slices of tomato and lettuce. Serve any remaining lettuce aside. The burgers are best eaten fresh. The burger buns can be stored at room temperature for u to about 3 days. Vegetarian Keto Burgers

Ingredient nutritional breakdown (per serving, 1 burger)

Net carbsProteinFatCalories
Portobello mushrooms, fresh
1.9 g1.6 g0.3 g17 kcal
Ghee
0 g0 g15 g136 kcal
Basil, fresh
0.1 g0.2 g0 g1 kcal
Oregano, fresh
0.5 g0 g0 g5 kcal
Garlic, fresh
0.5 g0.1 g0 g2 kcal
Salt, pink Himalayan rock salt
0 g0 g0 g0 kcal
Pepper, black, spices
0 g0 g0 g0 kcal
Ultimate Keto Buns, homemade (KetoDiet app)
4.3 g10.1 g15.9 g208 kcal
Mayonnaise
0.1 g0.2 g12.5 g111 kcal
Egg, whole, fresh, raw (free-range or organic eggs)
0.4 g6.3 g4.8 g72 kcal
Cheddar cheese
0.6 g4.6 g6.7 g81 kcal
Tomatoes, fresh
0.5 g0.2 g0 g4 kcal
Lettuce, mixed leaf salad
0.2 g0.2 g0 g2 kcal
Total per serving, 1 burger
9.1 g23.3 g55.2 g638 kcal

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Martina Slajerova
Creator of KetoDietApp.com

Martina Slajerova

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

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Comments (17)

These are so delicious! The Keto Buns and mushrooms pair great together!

Thank you India!

Lacto-ovo vegetarians include milk, cheese and eggs in their diets.

I'm new to Keto way of life. I am a vegetarian and part vegan. I really appreciate it when I find an awesome recipe to add to my vegetarian keto diet. Thank you so much Martina.

Thank you for your kind words!

Hi, what do you recommend as a substitute for mushrooms? Thanks

As a vegetarian alternative? I'm not sure. I was thinking about eggplant (a thick slice cut widthwise)? It might be too soggy though...

What about a green tomato?  Here in the south I often get a fried green tomato as a burger alternative.  You can lightly bread with almond flour and egg, before frying.  Holds up well in texture.  

That's a great idea! I'd give it a go. Also, roasted eggplant may work well as an alternative to mushrooms.

Can you make this the night before for lunch? Refrigerate I assume. Do I heat it up?

Yes, you can do that!

I really appreciate keto recipes that don't include meat. II know most ketoers are not vegetarians but that's why it's so hard to find recipes that are both keto and vegetarian. Thanks!!!

Hope you like it! 😊

Last I checked, eggs weren't veggie. Ugh back to searching another recipe

No one said these burgers were "vegan" and that's why eggs are included. Google is your friend.

Thanks so thanks so much for posting a vegetarian keto recipe! Can't wait for more!

Thanks Britney! 😊