This diner-style ‘patty’ melt is full of caramelized onions, mushrooms and cheese


Before the pandemic, you could wander into Du-par’s, on the corner of Fairfax and Third in Los Angeles, ask for a seat in a slick, red, tufted vinyl booth, and be sipping a mug of hot coffee in less than a minute.

You could order a stack of the diner’s famous pancakes, fat as throw pillows, a small bowl of melted butter on the side. You could feast on dense slabs of French toast, soft tuna sandwiches, ice-cold chocolate malts, wedges of cherry pie, “big, Frisbee-shaped omelets gilded with American cheese, soft rolls as large as spaniel ears . . . Swedish meatballs on Wednesdays and roast turkey with dressing,” as Jonathan Gold wrote in the Los Angeles Times in 1994. You could, if you were in the mood, order a patty melt.

Du-par’s probably didn’t invent the patty melt, but it claims to serve the original recipe. On the menu, it’s listed as “Tiny’s Classic Patty Melt: The Original Since 1932.” A beef patty, smothered in caramelized onions and melted Swiss, peeks out from between two slices of rye, griddled until crisp on both sides.

I used to live a block from Du-par’s – which reopened with limited indoor and outdoor seating last summer – and when I was having a bad day, I ordered the patty melt with french fries. On good days, I got it with coleslaw and extra pickles. I still love that play among the rich, buttery sandwich, soft tang of the slaw and sour punch of the pickles. An Arnold Palmer on the side, a slice of pie for dessert, extra coffee if I had time to linger. Diners!

In honor of diners, how about we make patty melts tonight? This recipe is a bit of a cheat, because it sidesteps the traditional “patty” for meaty, crispy mushrooms. You can use any mushrooms you like, but it’s wild mushroom season in most of the United States now, so if you see maitakes, king or black trumpets, hedgehogs or porcinis at the market, use those! Whatever ones you pick, the mushrooms will get a boost of flavor from Worcestershire sauce. Caramelized onions go in, too, of course, as does a pretty generous amount of cheese. Pile everything between two slices of bread and fry the sandwiches in a smidge of butter until they’re golden on both sides. Slice – on the diagonal! – and serve with . . . potato chips? A short milkshake? A quickly tossed slaw or herby salad? In my humble opinion, you should never skip the pickles.

As with all sandwiches, you can change up just about any element in this mushroom melt. Swiss is traditional, but use whatever melty cheese you happen to have kicking around in the fridge. I think the caramelized onions are essential, but consider instead caramelized garlic or fennel. I only ever make patty melts on rye bread, but Texas toast, multigrain, gluten-free or plain old white pullman can work, too.

If you don’t cook mushrooms too often, know that they will steam first, releasing excess moisture, before they caramelize alongside the onions. Onions have some natural sugar that will help them caramelize; if you skip the onions for any reason, consider adding a pinch of sugar to the mushrooms toward the end of cooking them, to ensure extra-crisp edges.

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Mushroom Patty Melts

30 minutes

4 servings

The patty melt is a diner classic, but it doesn’t have to be so meaty.

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Written by What is Find

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