Ingredients
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4 tablespoons butter or 4 tablespoons margarine
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1 large onion, chopped
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6 ounces mushrooms, chopped
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1 1/2 lbs ground sirloin
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1 1/2 teaspoons salt
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1 teaspoon fresh ground black pepper
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1 tablespoon A.1. Original Sauce
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flour (for dredging)
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2 tablespoons olive oil (preferably extra-virgin)
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5 large kaiser rolls, lightly toasted
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cheese, of your choice
Instructions
- In a large, heavy skillet, melt butter or margarine.
- Cook onions over medium-low heat until golden brown.
- Add the mushrooms and continue cooking until mushrooms are tender.
- Let sit until cool enough to handle.
- In a large bowl, mix the sirloin, salt, pepper, steak sauce, and onion-mushroom mixture.
- Form into 5 burgers.
- In same skillet, heat olive oil over medium heat.
- Dredge burgers in flour and cook until desired doneness, turning once.
- Add cheese (if desired) and melt atop burger.
- Top with a dollop of sour cream.