Sloppy Josephine Sliders (Vegetarian)

"Author Leah Eskin finds bean-based burger substitutes to be tired. While experimenting, she realized that the additions were really satisfactory in their own right, and, thus, came up with this recipe."
photo by AcadiaTwo photo by AcadiaTwo
photo by AcadiaTwo
photo by ForeverMama photo by ForeverMama
Ready In:
8 sliders




  • Heat olive oil in a wide, heavy skillet. Add the onions, 1/8 tsp salt and a few grinds of pepper. Cook, stirring often, over medium-heigh heat, until onions are browned and sticky/crispy, about 15 minutes. Remove pan from heat.
  • Meanwhile, in a second wide, heavy skillet, melt butter. Add all the mushrooms, garlic, 1/8 tsp salt and a few grinds pepper. Cook over medium-high heat, stirring frequently, until mushrooms are richly browned, about 15 minutes.
  • Increase heat to high, pour in cognac and cook until liquid disappears, 1 minutes. Remove pan from heat.
  • Split buns; lay them open-faced on a broiler rack. Cover both halves with cheese. Slide under the broiler just until cheese has melted, 1 to 2 minutes. Set buns on serving platter.
  • Heap mushrooms onto each bottom bun. Top with onions. Cover with top bun. Enjoy.

Questions & Replies

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  1. ForeverMama
    These were lovely! Used baby bella’s and white mushrooms – with the caramelized onion, they were delightful, delicious, and a great alternative to ground beef. It was even great on its own without the bread. The hubs who is not a mushroom lover, tried it and not one complaint – a miracle! Definitely worth making again, for sure! Thank you, duonyte, for sharing. Made it for The Joy of Vegetables tag game.
    • Review photo by ForeverMama
  2. Dr. Jenny
    This is one for my keeper file! DH and I made these last night for dinner. Yum! Excellent flavor. DH, who usually does not give overwhelmingly positive comments to meatless dishes said, "this one is pretty darn good." We made as posted and thought no modifications were needed. We served with roasted asparagus as a side. Thanks so much for posting. Made for Rookie Tag Spring 2013.
  3. AcadiaTwo
    Delicious mushroom onion sliders! I cut this recipe down for two and it made for a perfect lunch today. I served it with extra sharp orange cheddar cheese on potato buns as suggested! I used baby bellas instead of the white button mushrooms. Otherwise it was made as written! Made for Ramadan tag 2012.
  4. Sharon123
    I halved the recipe, used shitake and baby bella mushrooms. I left out the cognac and served open faced on whole grain bread. Yummy, thanks!


My screen name is a diminutive in Lithuanian for bread, so you won't be suprised to learn that I love to bake bread. In recent years I have been baking a lot of sourdough breads and have several starters sitting in my refrigerator. But I like to cook a lot of other things, as well, especially from various cultures. The cat wishes I would concentrate on meat and fish... I joined a few years ago but started posting recipes and participating in forums just recently - I wish I had done so earlier. Recipezaar is a great community! Right now I am a co-host for the Breads and Baking and the Eastern Europe forums - I hope to see you there!
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