Closeup of Ultimate Beef Burger in a Mushroom Bun on a red fast food napkin

The Ultimate Beef Burger in a Portobello Mushroom Bun

The Ultimate Beef Burger in a Portobello Mushroom Bun features a combination of sirloin, brisket, and beef back rib meat sandwiched between two savory portobello mushroom caps.

5 from 1 vote
Closeup of Ultimate Beef Burger in a Mushroom Bun on a red fast food napkin
Print Recipe

The Ultimate Beef Burger in a Portobello Mushroom Bun

Prep Time10 mins
Cook Time30 mins
Total Time40 mins
Course: Main Course
Cuisine: American
Servings: 8
Calories: 249kcal
Author: Olga Miller

Ingredients

  • 1 pound ground sirloin
  • ½ pound ground brisket
  • ½ pound ground meat from beef back ribs
  • 16 small portobello mushrooms , stems removed
  • 1 tablespoon sesame seeds
  • Olive oil
  • Kosher or fine sea salt
  • Freshly ground black pepper

Instructions

  • In a medium bowl, combine ground meats, 1½ teaspoons of salt and ½ teaspoon of pepper. Shape mixture into patties, about 3 inches in diameter and 1-inch thick. Press an indentation into the center of each patty.
  • In a large sauté pan set over medium-high, heat 1 tablespoon of olive oil. Add patties and cook, covered, for 6-8 minutes per side or until an instant-read thermometer inserted into the side of the burger reads 160°F. Transfer to a plate and cover to keep warm.
  • Meanwhile, generously brush mushrooms with olive oil and season with salt and pepper to taste. In a large sauté pan set over medium-high, cook in batches for 2-3 minutes each side or until golden and tender. Sprinkle half of the cooked mushrooms with sesame seeds. These will be the “tops”.
  • Place half of the cooked mushrooms top-side down. Add beef patties and desired toppings. Sandwich with remaining mushrooms, top-side up, to serve.
  • Serving suggestion: Top burgers with spring mix, heirloom tomatoes, red onions, and horseradish mayonnaise.
  • To make horseradish mayo: Stir together ½ cup mayo (I use soy-free mayo), 2 teaspoons of prepared horseradish, 1 teaspoon of drained and chopped capers, 1 teaspoon of lemon juice, 1 teaspoon of finely chopped fresh dill, and salt and pepper, to taste.

Nutrition

Nutrition Facts
The Ultimate Beef Burger in a Portobello Mushroom Bun
Amount Per Serving
Calories 249 Calories from Fat 135
% Daily Value*
Fat 15g23%
Saturated Fat 5g25%
Trans Fat 1g
Polyunsaturated Fat 1g
Monounsaturated Fat 6g
Cholesterol 68mg23%
Sodium 91mg4%
Potassium 921mg26%
Carbohydrates 7g2%
Fiber 2g8%
Sugar 4g4%
Protein 24g48%
Vitamin A 4IU0%
Calcium 30mg3%
Iron 3mg17%
* Percent Daily Values are based on a 2000 calorie diet.
Disclaimer: All nutrition facts on Gluten Free & More are meant only as a guide and may differ depending on product brands used or ingredient substitutions. Some errors may occur, so you are encouraged to confirm the recipe’s ingredient and nutrition suitability for your own diet.
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Tags: Beef Buns Burgers Mushrooms Olga Miller
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