Name: Mushroom Patty Melt

Ingredients:

• 6 tablespoons (3 ounces) unsalted butter, divided
• 2 tablespoons olive oil
• 10 ounces mushrooms, such as cremini or baby bella mushrooms, sliced
• 1 large yellow onion, halved and thinly sliced
• 1/4 teaspoon kosher salt
• 4 teaspoons Worcestershire sauce
• 8 slices rye bread or another bread of choice
• 8 slices Swiss cheese or Gruyère cheese, or more as desired
• Pickles, for serving (optional)

Instructions:

• In a large (ideally 12-inch wide cast iron) skillet over high heat, melt 2 tablespoons of the butter.
• Add the olive oil, mushrooms, onion and salt.
• Fry, stirring frequently, until the onions and mushrooms caramelize and crisp, 10 to 15 minutes, adjusting the heat as necessary if they start to burn.
• Remove from the heat and stir in the Worcestershire.
• Lay 4 slices of bread onto a flat surface
• Place at least 1 slice of cheese on each slice of bread.
• Top with a quarter of the onion-mushroom mixture, followed by at least 1 slice of cheese and the remaining slice of bread.
• Wipe the skillet out and place over medium heat.
• Melt the remaining 4 tablespoons of butter, and fry the sandwiches, in batches if necessary, until the cheese has melted evenly and both sides are crisp, 2 to 3 minutes per side.
• Slice in half and serve hot, with pickles on the side, if desired.

Comments: 6/24/2023 - I used 8 ounces of baby bella mushrooms, 1/2 yellow onion, 7 ounces Gruyère cheese, and Jewish Rye Seed Artisan bread. I cut the bread in about 3/8-inch slicesThe onions and mushrooms were crisp in 10 minutes at burner settings 8 to 9. The first night I used half the mushroom-onion mixture with six slices of bread to make three sandwiches. They were crisp in 2 to 3 minutes at a burner setting of 6. Served with peas as a side dish. There was a lot of oil spattered on the stove.
11/11/2023 - I used rye bread and Edam cheese. The sandwiches were scorched, but tasted good. The bread slices could have been bigger, so I got five sandwiches. I laid a single slice of Edam cheese on each. There was little spattered butter.

Source: The Washington Post, 12 May 2021

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