Portobello Burgers With Avocado Mayonnaise

Recipe by Sharon123
READY IN: 35mins




  • Coat the mushrooms, bell peppers, and onion with cooking spray.
  • Grill onion, covered with grill lid, over medium high heat(350* to 400*) 8 minutes on each side. Grill mushroom 5 minutes on each side(or you may roast in a 425*F. oven). Place bell peppers on grill, skin side down, and grill 4-5 minutes or until skin is blistered(if you can't find fresh red bell peppers, you can buy them already roasted in jars). See note.
  • Peel the bell peppers, and cut into strips.
  • Avocado Mayonnaise: Process all ingredients in a food processor until smooth, stopping to scrape down sides. Cover and chill 2 hours, if desired. Makes 1 cup.
  • Spread the avocado mayonniase on cut sides of buns: place on cooking grate, and grill 1 minute. Place mushrooms, bell pepper strips, and onion evenly on bottom halves of buns. Top each with avoado slices and top bun halves.
  • Note: To grill onion, push water soaked skewers crosswise through the whole onion at 1/2" intervals. Slice between skewers and place skewered slcies on grill.