Grilled Portabella Burger With Basil Mayonnaise

"This recipe was featured in our August/September 2007 newsletter. It was submitted by Susan Jaffe, R.D., C.D., VNA Vice President. She adapted the recipe from one in the book, Some Like It Hot by Robin Roberts. She says, "I have made this recipe many times for my family. I usually saute the red onion in a pan before serving. You can serve this recipe with grilled tempeh brushed with teriyaki sauce. It is delicious and great for a hot summer night!""
photo by AcadiaTwo photo by AcadiaTwo
photo by AcadiaTwo
Ready In:
4 sandwiches




  • Heat grill or grill pan.
  • In a small bowl, combine basil, vegan mayonnaise, and vinegar; set aside.
  • Lightly coat both sides of mushroom caps with olive oil.
  • Season with salt and pepper, if desired.
  • Grill mushrooms over medium-high heat, until just soft to the touch, about 6 minutes per side.
  • To serve, split buns and toast on grill.
  • Spread a heaping teaspoon of the basil mixture on top and bottom halves of buns.
  • Layer each bottom half with one lettuce leaf, red pepper,.
  • mushroom, and onion slice; top with remaining half bun.
  • and serve.

Questions & Replies

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  1. vegan mom
    These made really juicy burgers. I used vegenaise which gave the mayo a nice sweet taste. We also grilled up the onions and some tomatoes and added them to the sandwich. I wish I had a picture of my 5 year old who was wearing mushroom juice all over her face and hands. Will definitely make these again.
  2. zaar junkie
    I really enjoy the meatiness of portabella burgers and these were good. I used red wine vinegar in place of the cider vinegar and it turned out well. Easy to make, great for BBQs.
  3. billybolo
    these were so tasty! Me and the husband loved them. Will be making again, and again.
  4. AcadiaTwo
    Delicious mushroom burger served on a potato bun. Loved the basil faux mayonnaise too. Thanks for posting. I also sauteed the onions in olive oil. Made for the Spring 2009 PAC event.


  1. zaar junkie
    I really enjoy the meatiness of portabella burgers and these were good. I used red wine vinegar in place of the cider vinegar and it turned out well. Easy to make, great for BBQs.


The Vegetarian Network of Austin (VNA) is a local, active group of vegetarians and vegans in Austin, Texas. We are open to anyone interested in a vegetarian lifestyle. Our organization meets regularly for food, fun, support and to exchange information and ideas. We host monthly vegan potlucks and patronize local vegetarian-friendly restaurants. We also meet for social gatherings and public outreach. We periodically advertise and promote special events such as the Lone Star Vegetarian Chili Cook-Off and sponsor special guest speakers. The 21st Annual Lone Star Vegetarian Chili Cook-Off is on Sunday November 15, 2009 from 11:30 am to 4:00 pm at the Travis County Farmers Market (formerly the Historic Austin Farmers Market), 6701 Burnet Road, in Austin, Texas. Chili Teams from all over Texas will delight you with an amazing array of delicious, healthy, meatless chilis as they compete for best chili and best booth! Door Prizes - Live Entertainment - Educational Booths and Exhibits $7 Adults (13 and up), $3 Children 6-12 years (5- are free!) (CASH ONLY AT THE GATE) Produced by the Lone Star Vegetarian Network: Austin, Dallas, Houston, San Antonio, Fort Worth, El Paso ------------------------------------------------------- We're looking for chili teams, volunteers, door prizes, celebrity vegetarians and, of course, attendees! See for more information. This cookbook is a place for us to keep our recipes printed in our bi-monthly newsletters, popular dishes from our monthly potluck dinners, and also recipes from Recipezaar chefs that our members recommend. To submit a recipe or a Recipezaar recommendation, e-mail it to our newsletter editor at <img src=""> Pick A Chef is a chance to discover new chefs, recipes, and “get to know” other chefs on Zaar. Recipezaar chefs agree to make & review 3 of his/her picked chefs' recipes by the event deadline. They make the recipes & submit their reviews any time before the deadline. There are a few rules on how the selections work, but PAC is a very easy game to play. See the Recipezaar Community for more information. Acadia adopted us and made/reviewed: Asian Noodles and Broccoli Vegan Cornbread Grilled Portabella Burger With Basil Mayonnaise Thank you, Acadia!
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