Jul 14 2026

Portobello Melt Recipe

Time45m
Serves2

Grilled marinated portobello mushroom with avocado, and grilled red onions, lettuce, tomato, and Veganaise, on a house-made whole wheat bun.

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Ingredients

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Main Ingredients

Method

Preparation Steps

  1. 1

    Marinate the Portobello Mushrooms

    In a bowl, combine olive oil, balsamic vinegar, garlic, salt, and pepper. Add the portobello mushrooms and marinate for at least 30 minutes.

  2. 2

    Grill the Mushrooms

    Preheat a grill or grill pan over medium heat. Grill the marinated portobello mushrooms for about 5-7 minutes on each side, until tender.

  3. 3

    Prepare the Red Onions

    Slice the red onion into rings and grill them on the same grill for about 3-4 minutes, until they are soft and slightly charred.

  4. 4

    Assemble the Sandwich

    Toast the whole wheat buns. Spread Veganaise on the bottom half of each bun. Layer with lettuce, sliced tomato, grilled portobello, grilled onions, and sliced avocado. Top with the other half of the bun.

  5. 5

    Serve

    Cut the sandwich in half and serve immediately with your choice of side.

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