Several of my friends are vegetarians, so I came up with this recipe last summer when I was having a barbecue. They are so good, even carnivores will devour them. If you can find Portuguese muffins, their sweet flavor makes for a delicious bun option.
Recipe courtesy of Katie Lee
Save Recipe Print
Total:
3 hr 10 min
Prep:
30 min
Inactive:
2 hr
Cook:
40 min
Yield:
6 servings
Level:
Intermediate

Ingredients

For the burgers:
For the onions:
For the aioli:

Directions

For the burgers: In a shallow baking dish, use a whisk to combine the lemon juice, olive oil, Worcestershire, thyme, and garlic powder. Place mushrooms in the marinade, cover, and refrigerate for at least 1 hour. Turn over the mushrooms, cover again, and refrigerate at least another hour. (Mushrooms can marinate for several hours.)

For the onions: In the meantime, make the onions. In a skillet, heat the olive oil over medium heat. Add the onions and cook about 5 minutes, stirring occasionally. Add the water, cover, and reduce heat to low. Cook 20 to 30 minutes, stirring occasionally, until the onions are golden brown. Remove the pan from the heat. Season the onions with salt and pepper. Set aside.

For the aioli: Combine all ingredients in a small bowl. Refrigerate until serving time.

To finish the burgers: Preheat oven to 450 degrees F. Remove mushrooms from marinade and season with salt and pepper on both sides. Place the mushrooms on a baking sheet, gill sides up. Bake for 5 minutes. Remove from the oven and arrange cheese and caramelized onions on the gills of each mushroom and bake another 5 minutes, until the cheese is melted and bubbly. Place 1 mushroom on each muffin and garnish with aioli and arugula. Serve immediately.

My Private Notes

Add a Note
Get the Recipe

Berry Dessert Lasagna

This chilled berry trifle is an easy, crowd-pleasing dessert.

IDEAS YOU'LL LOVE

Grilled Portobello Mushrooms

Recipe courtesy of Williston Dye

Grilled Portobello Mushrooms with Balsamic

Recipe courtesy of Alex Guarnaschelli

Grilled Portobello Mushrooms with Tomatoes and Fresh Mozzarella

Recipe courtesy of Giada De Laurentiis

Oven Roasted Mushrooms

Recipe courtesy of Michele Urvater

Mushroom Cheeseburgers

Recipe courtesy of Food Network Kitchen

Spicy Portobello Mushrooms and Roasted Red Peppers

Recipe courtesy of Debra Grossman

Marinated Portobello Mushrooms with Roasted Pepper Vinaigrette

Recipe courtesy of Mary Sue Milliken|Susan Feniger

Portobello Mushrooms

Recipe courtesy of Ryan Allen

Creamy Mushroom Cheeseburger

Recipe courtesy of Aaron McCargo Jr.

Browse Reviews By Keyword

          Check Out Our

          Get a sneak-peek of the new Food Network recipe page and give us your feedback.

          See it Now!

          Latest Stories