French Onion Portobello Burgers

If you like French onion soup then you will cherish these portobello burgers.  These burgers were so easy to make (much easier than other recipes I have tried and yet they were still loaded with flavor).

Recipe adapted from Food Network

Ingredients:

1 sweet onion sliced

2 teaspoons dried thyme or Italian seasoning blend

1 tablespoon Worcestershire sauce, plus some to drizzle

4 medium portobello mushroom caps stems removed

2 tablespoons extra virgin olive oil

1/8 teaspoon garlic powder

1 cup shredded swiss cheese (or sliced baby swiss)

1/3 cup plain nonfat Greek yogurt

1 clove garlic

¼ cup crispy fried onions

Buns, English muffins, or salad to serve burgers on

Directions:

1. Line a rimmed baking sheet with aluminum foil.
2. Spray a nonstick pan with olive oil spray.  Saute the onion with thyme, ½ teaspoon salt, and pepper.  Cook for 15 minutes on medium low heat until onions caramelize.
3. Add 1 tablespoon of Worcestershire sauce and cook 1 more minute.
4. If serving on English muffins place the muffins on baking sheet and broil for 1-2 minutes.
5. Place the mushrooms gill side down on the baking sheet.  Broil for 6 minutes.  Flip mushrooms over.  Drizzle with Worcestershire sauce. Season with garlic salt.  Broil 6 more minutes. 
6. Top each mushroom with swiss cheese (shredded or sliced).  Broil for 1 more minute.
7. While the mushrooms broil stir the yogurt, garlic, 1/2 teaspoon dried thyme, 1 teaspoon Worcestershire sauce in a small bowl. 
8. Place Portobello burgers on English muffins with the yogurt sauce or over a bed of spinach.  Top with caramelized onions and crispy fried onions. 
9. Enjoy!