Portobello Mushroom Keto Burger (Bun-less)

Indulge in the hearty flavors of a keto-friendly burger with our Portobello Mushroom Keto Burger recipe. Perfectly seasoned, juicy patties nestled between two savory Portobello mushrooms, delivering a mouthwatering experience with each bite. This bun-less burger offers all the satisfaction without the carbs, making it an ideal choice for your low-carb lifestyle.

Course Dinner, Lunch

Cuisine American, Keto

Keyword Bun-less Burger, keto burger, Low Carb Burger, Portobello Mushroom Keto Burger

Prep Time 15

Cook Time 15

Total Time 30

Servings people

Calories 600kcal

Equipment

Grill or grilling pan
Mixing bowl
Brush for oil
Grill spatula

Ingredients

4 large Portobello mushrooms, stems removed approx. 6 oz or 170g each
1 pound ground beef, 80/20
1 teaspoon sea salt
½ teaspoon ground black pepper
1 tablespoon olive oil
2 slices cheddar cheese approx. 1 oz or 28g each
1 small red onion, thinly sliced approx. 2 oz or 56g
4 leaves lettuce
1 tomato, sliced approx. 3 oz or 85g
2 tablespoons mayonnaise
1 tablespoon mustard
1 tablespoon unsweetened ketchup
1 teaspoon Worcestershire sauce optional

Instructions

Preheat your grill or grilling pan over medium-high heat.
Brush the Portobello mushrooms with olive oil and season with a pinch of salt and pepper. Set aside.
In a bowl, mix the ground beef with salt, black pepper, and Worcestershire sauce (if using) until well combined.
Divide the beef mixture into two equal portions and form them into patties slightly larger than the mushrooms.
Place the mushrooms and beef patties on the grill. Cook the mushrooms for about 4 minutes on each side or until they are tender and the beef patties for about 5 minutes on each side or until they reach your desired level of doneness.
In the last minute of cooking, place a slice of cheddar cheese on each patty and let it melt.
Remove the mushrooms and patties from the grill and let them rest for a couple of minutes.
To assemble the burgers, place one Portobello mushroom cap, gill-side up, on a plate. Add a lettuce leaf, followed by the cheesy beef patty, a slice of tomato, some red onion, and a dollop each of mayonnaise, mustard, and ketchup.
Top with the second Portobello cap, gill-side down, and serve immediately.

Notes

Feel free to customize your keto burger with additional keto-friendly toppings like avocado, bacon, or a fried egg. For those on a strict keto diet, ensure the ketchup used is unsweetened to keep the sugar content low. Enjoy this fulfilling and delicious burger without any guilt!

Nutrition