Patty Melts

Directions

1. 1
   Heat 1 teaspoon olive oil in a large nonstick skillet over medium-high heat.
2. 2
   Add the onions and cook, stirring, until soft, 2 to 3 minutes.
3. 3
   Push to one side of the skillet; add the mushrooms and cook until browned, about 2 minutes.
4. 4
   Season with salt and pepper, then mix the mushrooms and onions together and cook until the onions are golden, about 10 more minutes.
5. 5
   Add the vinegar and 2 tablespoons Worcestershire sauce.
6. 6
   Transfer the mixture to a bowl and keep warm.
7. 7
   Meanwhile, mix the turkey, beef and the remaining 2 teaspoons Worcestershire sauce in a bowl.
8. 8
   Shape into 4 equal-size oval patties.
9. 9
   Wipe out the skillet, add 1 tablespoon olive oil and place over medium-high heat.
10. 10
    Season the patties with salt and pepper and cook until browned on the bottom, about 4 minutes.
11. 11
    Flip and cook through, 1 to 2 more minutes.
12. 12
    Divide the onions and mushrooms among 4 bread slices; top with a slice of cheese, a patty, another slice of cheese and another bread slice.
13. 13
    Wipe out the skillet; add 1 tablespoon olive oil and place over medium heat.
14. 14
    Cook the sandwiches in two batches until the bread is toasted and the cheese melts, 1 to 2 minutes per side, adding the remaining 2 teaspoons oil as needed.
15. 15
    Per serving: Calories 534; Fat 26 g (Saturated 7 g); Cholesterol 83 mg; Sodium 848 mg; Carbohydrate 40 g; Fiber 10 g; Protein 37 g
16. 16
    Photograph by Antonis Achilleos