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Thursday, March 19, 2026

Mushroom Patty Soften – Price range Bytes


I LOVE ANYTHING MUSHROOM! Clearly, I used to be excited to create this riff on a traditional patty soften, however with a twist. You gained’t discover any meat right here, however as a substitute a budget-friendly and satisfying soften stacked with mushrooms and filled with all of the flavors. These Mushroom Patty Soften sandwiches nonetheless retain the essence of a traditional patty soften, protecting the rye bread, caramelized onions, and Swiss cheese. The mushrooms, nevertheless, are roasted with garlic, thyme, balsamic vinegar, and soy sauce, which makes them irresistible. I can’t wait so that you can attempt it and share my ardour for the portobello!

Overhead view of a mushroom patty melt and fries on a plate.Overhead view of a mushroom patty melt and fries on a plate.
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Simple Mushroom Patty Soften Recipe

These meatless portobello patty melts nonetheless ship all of the wealthy, diner-style consolation I’ve at all times beloved in a conventional soften. The rye bread will get crisp and golden within the skillet, the Swiss cheese turns gooey, and the candy caramelized onions tie the whole lot collectively. As a substitute of a beef patty, I take advantage of roasted portobello mushrooms, which absorb the selfmade garlicky balsamic-soy marinade and produce deep, savory taste to each chew. Patty melts have been a staple on American diner menus for many years now, and this model retains that old-school allure whereas giving it a contemporary, veggie-forward twist.


Mushroom Patty Soften

Make this Mushroom Patty Soften recipe with roasted portobellos, gooey Swiss cheese, and golden rye bread. A meatless traditional stuffed with consolation and taste!Step-by-step images will be seen beneath the recipe card.

Side view of a mushroom patty melt and fries on a plate.Side view of a mushroom patty melt and fries on a plate.

  • ½ cup vegetable oil (divided, $0.33)
  • 1 colossal onion (thinly sliced (565g, about 3 cups) $0.93*)
  • 4 giant portobello mushrooms ($5.36)
  • 2 garlic cloves (minced, (1 Tbsp) $0.12)
  • ¼ cup balsamic vinegar ($0.48)
  • cup soy sauce ($0.11)
  • ½ tsp dried thyme ($0.22)
  • 8 slices rye bread ($1.37)
  • cup mayonnaise ($0.30**)
  • 8 slices Swiss cheese ($1.31**)
  • ¼ tsp salt ($0.01)
  • 4 Tbsp butter (divided, $0.50***)

  • Preheat the oven to 400°F. Collect and put together all elements.

  • In a medium skillet over medium warmth, heat ¼ cup vegetable oil. Add the sliced onions and prepare dinner, stirring often, for about 45 minutes till caramelized and golden. Take away and put aside, then wipe out the pan for the sandwiches.

  • Whereas the onions are cooking, take away the stems and gills from the mushrooms and place them, cap facet down, on a parchment-lined sheet tray.

  • In a small bowl, whisk collectively the garlic, balsamic vinegar, remaining ¼ cup vegetable oil, soy sauce, and thyme. Rigorously pour on the mushroom caps. It’s okay if it overflows. Roast the mushrooms within the oven for 20 minutes, then put aside. As soon as cooled, slice the mushrooms.

  • To assemble the patty melts, lay out the rye bread and unfold mayo evenly over all 8 slices. Prime every with Swiss cheese and caramelized onions. Add the sliced portobello mushrooms to 4 slices of bread and sprinkle with salt, then shut with the remaining 4 slices to kind sandwiches.

  • To prepare dinner the patty melts, soften 1 Tbsp butter within the skillet over medium warmth. Place two sandwiches within the skillet. Toast for 3–4 minutes, then add one other Tbsp of butter, fastidiously flip, and prepare dinner for 3-4 extra minutes. Repeat with the remaining two sandwiches and butter. Serve and revel in!

See how we calculate recipe prices right here.


  • Small Bowl

  • Medium Skillet

  • 10×15” Baking Sheet

  • Parchment Paper

*Colossal onions are extra-large yellow onions. I used to be capable of finding a colossal onion at Kroger’s. You can even caramelize two smaller onions in case you can’t discover one monumental one.
**You can also make these melts vegan by substituting vegan mayo, plant-based Swiss or mozzarella cheese, and utilizing oil to toast the bread.
***I prefer to toast my mushroom melts with butter, however you need to use oil and even unfold the outsides of the sandwich with additional mayo earlier than toasting.

Serving: 1sandwichEnergy: 864kcalCarbohydrates: 52gProtein: 19gFats: 66gSodium: 1225mgFiber: 7g

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the best way to make A Mushroom Patty Soften step-by-step images

The ingredients to make a mushroom patty melt.The ingredients to make a mushroom patty melt.

Collect your whole elements and preheat your oven to 400°F.

Sliced onions in a skillet.Sliced onions in a skillet.

Caramelize the onions: Heat ¼ cup vegetable oil in a medium-sized skillet over medium warmth. Add 1 sliced colossal onion (or two smaller onions totalling about 3 cups as soon as sliced) and prepare dinner for about 45 minutes. Stir the onions often till they turn out to be caramelized and golden. Making caramelized onions is a labor of affection, however the outcomes are value it, so it pays to be affected person! See our information on the best way to make caramelized onions for extra ideas and methods.

As soon as finished, take away the onions and set them apart. Wipe down the pan for the sandwiches.

A spoon scooping out the gills from four portabella mushrooms on a wooden cutting board.A spoon scooping out the gills from four portabella mushrooms on a wooden cutting board.

Clear the mushrooms: Whereas your onions are caramelizing, use a spoon to scoop out the stems and gills from 4 portobello mushrooms. In the event that they’re fairly soiled, you can too wipe them down with a humid paper towel. Place the cleaned mushrooms cap facet down on a parchment-lined baking sheet.

Mushroom marinade in a bowl.Mushroom marinade in a bowl.

Make the marinade: Whisk collectively 2 minced garlic cloves, ¼ cup balsamic vinegar, remaining ¼ cup vegetable oil, ⅛ cup soy sauce, and ½ tsp dried thyme in a small bowl.

A spoon drizzling a balsamic marinade over four portabella mushrooms on a parchment lined baking sheet.A spoon drizzling a balsamic marinade over four portabella mushrooms on a parchment lined baking sheet.

Roast the mushrooms: Now, fastidiously spoon the marinade into the ready mushroom caps. It’s okay in the event that they overflow a bit!

Four baked portabella mushrooms on a parchment lined baking sheet.Four baked portabella mushrooms on a parchment lined baking sheet.

Roast the mushrooms in your preheated oven for 20 minutes. Set them apart to chill.

A knife slicing baked portabella mushrooms into slices.A knife slicing baked portabella mushrooms into slices.

Slice the mushrooms: As soon as they’re cool sufficient to deal with, slice the mushrooms into strips.

A hand adding portabella slices to a sandwich on a wooden cutting board.A hand adding portabella slices to a sandwich on a wooden cutting board.

Assemble the sandwiches: Lay out 8 slices of rye bread and unfold mayo evenly on every slice, utilizing ⅓ cup of mayo complete. Prime the slices with Swiss cheese (8 slices) and the caramelized onions. Add the sliced portobello mushrooms to 4 slices of bread and sprinkle with ¼ tsp salt, then high with the remaining 4 slices to kind sandwiches.

A spatula flipping a mushroom patty melt in a skillet.A spatula flipping a mushroom patty melt in a skillet.

Prepare dinner: Soften 1 Tbsp of butter in your skillet over medium warmth. Place two sandwiches into the skillet and toast for 3-4 minutes. Then, add one other Tbsp of butter, fastidiously flip the sandwiches, and toast for 3-4 minutes on the opposite facet. Relying on the scale of your skillet and what number of sandwiches it could possibly match, chances are you’ll must prepare dinner in additional than two batches.

Overhead view of four mushroom patty melts on a wooden cutting board.Overhead view of four mushroom patty melts on a wooden cutting board.

Repeat the cooking course of with the remaining sandwiches and butter. Serve and revel in!

Overhead view of a mushroom patty melt and fries on a plate.Overhead view of a mushroom patty melt and fries on a plate.
  1. Keep away from washing mushrooms instantly in water, as they’ll turn out to be mushy. As a substitute, I like to recommend wiping them with a humid paper towel to take away filth, if wanted.
  2. I prefer to take away the stems since they could be a bit robust, after which gently scrape out the gills with a spoon. They have a tendency so as to add a barely bitter, muddy taste that I’d moderately omit.
  3. You possibly can customise this vegetarian patty soften with totally different breads, cheese, and fillings. I’ve used sourdough and common sandwich bread earlier than. Mozzarella melts fantastically and provides it a gentle, creamy taste, however sharp cheddar or provolone are nice, too. I generally tuck in a couple of tomato slices and even some sautéed spinach. I guess sauerkraut, as utilized in a traditional Reuben sandwich, would even be scrumptious.
  4. Mushrooms absorb taste like a sponge, so even a easy marinade made with totally different spices, herbs, and vinegars will style nice. Attempt including ½ to 1 Tbsp brown sugar, like within the marinade for our one-pan mushroom steak dinner, or use the marinade from our portobello mushroom burgers as a substitute!

Methods to Serve Mushroom Patty Soften Sandwiches

I nearly at all times pair this patty soften with fries. It simply hits that traditional diner-style combo I grew up loving. Air fryer French fries are completely crispy and manner simpler to make than the deep-fried form. If I need one thing contemporary to stability the richness, I’ll go for our Mediterranean coleslaw or a easy Greek salad. After all, these straightforward mushroom Swiss patty melts are simply as scrumptious on their very own or along with your favourite chips on the facet!

Storage, Meal Prep & Reheating

These straightforward mushroom patty melts will maintain within the fridge for as much as 5 days. You possibly can take pleasure in them chilly, however I like reheating them in a skillet with somewhat additional butter to get the bread crispy once more.

In case you’re planning forward, you may prep the mushrooms and caramelized onions upfront, retailer them individually, and simply assemble and toast the sandwiches once you’re able to eat. The cooked mushrooms, caramelized onions, and untoasted rye bread additionally freeze properly for 3-6 months. Simply thaw the whole lot within the fridge in a single day earlier than constructing and toasting your melts.

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