How long does it take to caramelize the onions for this patty melt?

The recipe calls for cooking the sliced white onion in a skillet with small amounts of water for about an hour, until they are a deep golden brown and sweet.

What are the main ingredients for the vegan patties?

The savory patties are made from mashed cooked navy beans, seasoned with caraway seeds, liquid smoke, soy sauce, salt, and pepper, bound with a flax egg.

Can I prepare the cashew Swiss cheese sauce in advance?

Yes, you can make the cashew Swiss cheese sauce ahead of time. It's blended from soaked cashews, miso, tahini, nutritional yeast, Dijon, lemon juice, and seasonings, then stored until ready to assemble.

How should I cook the navy bean patties?

The formed navy bean patties are baked in a 400 degrees F oven for 10 minutes per side on a lightly greased cookie sheet until firm.

What's the best way to grill the assembled patty melts?

Once assembled with buttered bread, a patty, onions, and cheese sauce, grill the sandwich over medium heat until both sides are golden brown.

8.5K Views 11 years ago

Swiss Cheese and Onion Patty Melt
[Vegan]

AF By: Ashley Flitter

Author Bio

Ashley N. Flitter is a web nerd and avid home cook who blogs at The... Read More

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A grilled vegan Swiss cheese and onion patty melt, cut in half to reveal a thick navy bean patty, golden caramelized onions, and creamy cashew Swiss cheese sauce, served on a plate.

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Swiss Cheese and Onion Patty Melt [Vegan]

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Patty melts are one of those things I hated as a kid, but grew to love as an adult. When I was a kid the thought of eating that many onions made my stomach turn, but now it makes my mouth water. Ah, how adulthood changes us sometimes. This recipe... Read More

Ingredients You Need for Swiss Cheese and Onion Patty Melt [Vegan]

For the Onions:

1 large white onion, sliced
water

For the Patties:

2 cups cooked navy beans
1 tsp caraway seeds
1 tbsp ground flax + 3 tbsp water (whisked together)
1/4 tsp liquid smoke
1 tsp soy sauce
salt and pepper to taste

For the Swiss Cheese Sauce:

1/2 cup cashews, soaked 30 minutes
1 tbsp light miso (white or yellow)
1 tbsp tahini
1/3 cup nutritional yeast
1 tbsp dijon mustard
1 tsp onion powder
1 tsp garlic salt
3 tbsp lemon juice
1/4 cup water

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How to Prepare Swiss Cheese and Onion Patty Melt [Vegan]

Preheat the oven to 400 degrees F. Warm about 2 tbsp of water in a skillet over medium heat and add the sliced onions. Let cook untouched until water has evaporated and add about 2 tbsp more water and mix. Continue to do this for about 1 hour or until onions are a deep golden brown color and are sweet tasting.
While the onions are cooking, add your beans to a large mixing bowl and mash them until most of them are mashed, though some large bits can remain. Mix in the remaining ingredients and form the mixture into 4 balls. Flatten each ball and place on a lightly greased cookie sheet. Bake for 10 minutes, flip, and bake 10 minutes more.
While the burgers are cooking, prepare your cheese sauce. Drain the cashews and rinse once more. Add the cashews to a food processor or blender and pulse once or twice. Add remaining ingredients except for the water and pulse until well combined. Stream in the water while pulsing until desired consistency is achieved. I left it fairly thick so it wouldn't run off of the sandwich.
Once all components are done, assemble the sandwiches by buttering two pieces of bread. Top with a bean burger, a heaping pile of caramelized onions, and some cheese sauce. Grill the sandwich over medium heat until both sides are golden brown. Serve.