Credit: The Pioneer Woman
- 2 Tablespoons Butter
- 2 whole Large Onions, Halved And Sliced Thin
- 1/4 cup Beef Broth
- 7 dashes Worcestershire Sauce
- Splash Of Red Or White Wine
- 1/2 cup Grated Gruyere Cheese (can Use Swiss)
- Kosher Salt
- 24 whole White Or Crimini Mushrooms, Washed And Stems Removed
- Minced Parsley
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