Ingredients:    

Gruyere cheese oozing goodness!

• 1 pound ground beef
• 2 teaspoons garlic salt
• 2 tablespoons Worcestershire sauce
• 1 teaspoon soy sauce
• 3 cup sliced Sweet onions
• 2 tablespoons salted butter
• 1/2 pound baby portabella mushrooms
• 1/4 cup Cream Sherry (sweet)
• 4-slices Gruyere cheese
• 4 hamburger buns (I used onion rolls)
• Ketchup to taste

Directions:

1. Mix ground meat, with garlic salt gently not to over work the meat.
2. Shape the meat into 4 large 1/4 pound burgers and refrigerate.
3. Place onion slices in a microwave safe dish with 1-tablespoon butter and microwave onion slices for three 3-minute intervals (total of 9-minutes), stirring them in between each 3-minute interval.
4. When onions are done cooking, remove from microwave and set aside.
5. Clean mushrooms and slice them up. (I do this step while onions are cooking).
6. Add 1-tablespoon butter to non-stick skillet and melt.
7. Add mushrooms to skillet and cook them on medium high heat stirring occasionally to brown all sides for about 10-15-minutes.
8. Add cream sherry, soy sauce and Worcestershire sauce and raise the heat to medium high to reduce the liquid, stirring frequently. (For me this took about 5-minutes).
9. Turn heat off.
10. Normally I would grill the burgers on my gas grill, however, lately we have been hit with numerous rain drenched days, so I broiled them in the oven.
11. Pre-Heat oven to broil (550° F). I have a gas oven with the broiler on top, which allows me to place an oven rack on the level just under the top rack.
12. I place the burgers on a rack on top of a foil lined broiler pan.
13. We like our burgers medium rare. (However the FDA recommends cooking ground meat to at least 160° F to kill bacteria and other food born illnesses).
14. For medium rare (145° F) broil burgers for 4-minutes one side, flip over and broil for another 3-minutes, remove them and add Gruyere cheese.
15. Broil additional minute to melt cheese.
16. Divide mushrooms, reduced Sherry liquid and Onions into 4-piles.
17. While burgers are broiling, warm up mushrooms and onions.
18. Place burger on roll with cheese side facing up, then add mushrooms and onions.
19. We also had ours with ketchup.

Preparation Time: 30 minutes; Total Cooking Time: Approximately 30 minutes;

Serves 4-quarter pound burgers (or 6 smaller burgers, cooked for less time for medium rare).

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