Grilled Portabella and Bulgur Salad "Sandwiches"
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026
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This vibrant vegan dish reimagines the classic burger by using juicy, grilled portobello mushrooms as a natural 'bun'. The mushrooms are marinated in a zesty tomato and rosemary vinaigrette before being grilled to smoky perfection. Inside, you will find a hearty filling of nutty bulgur wheat, toasted pine nuts, and charred Mediterranean vegetables, creating a sophisticated play on textures and fresh, seasonal flavours.
Ideal for a light summer dinner or an impressive plant-based lunch, these mushroom sandwiches are naturally low in saturated fat and packed with fibre. The combination of grilled peppers, courgettes, and red onions provides a satisfying savoury depth that pairs beautifully with the creamy avocado served on the side. It is a nutritious, homemade meal that proves vegan cooking can be both elegant and incredibly filling.
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Ingredients for Grilled Portabella and Bulgur Salad "Sandwiches"
1 large garlic clove
575ml grape or cherry tomatoes
1/2 cup flat-leaf parsley leaves
1/3 cup extra-virgin olive oil
60ml red-wine vinegar
1 tablespoon finely chopped rosemary
1/4 teaspoons hot red-pepper flakes
8 large portabella mushrooms, stems reserved for another use (see cooks' note, below)
1 small red onion, cut lengthwise into 1/2-inch-thick wedges (keeping root end intact)
2 medium yellow peppers, quartered lengthwise
1 medium courgette, halved lengthwise
1 1/2 tablespoons extra-virgin olive oil
350ml boiling-hot water
240ml medium bulgur
1/4 cup pine nuts, toasted
70g baby rocket (4 cups)
1 firm-ripe small avocado
How to make Grilled Portabella and Bulgur Salad "Sandwiches"
With motor running, drop garlic into food processor and finely chop. Add tomatoes, parsley, oil, vinegar, rosemary, red-pepper flakes, 1/2 teaspoons salt, and 1/4 teaspoons pepper and pulse until tomatoes are finely chopped but not puréed.
Peel skin from portabellas using tip of a paring knife, pulling from edge of mushroom toward centre. Gently scrape off gills from mushrooms with tip of a spoon. Toss portabellas with 120ml vinaigrette in a 13- by 9-inch glass baking dish and let stand, turning occasionally, 20 minutes.
Prepare a gas grill for direct-heat cooking over medium heat; see Grilling Procedure .
Push 1 wooden pick into each onion wedge to secure for grilling. Toss onion wedges, peppers, and courgette with oil, 1/4 teaspoons salt, and 1/8 teaspoons pepper. Oil grill rack, then grill vegetables, covered, turning occasionally, until tender (6 to 8 minutes for peppers, 6 to 10 minutes for courgette, 8 to 12 minutes for onion, and 12 to 15 minutes for portabellas).
Transfer portabellas to a plate and remaining vegetables to a bowl as cooked. Cool slightly, then remove wooden picks and coarsely chop onion, peppers, and courgette.
While vegetables cook, pour boiling-hot water over bulgur with 1/2 teaspoons salt in a large bowl and let stand until water is absorbed and bulgur is tender, about 5 minutes. Drain in a sieve if any water remains.
Add vegetables to bulgur with pine nuts and remaining vinaigrette and toss.
Put one fourth of rocket on each of 4 plates. Top with upside-down portabella. Pack bulgur mixture into a cup measure, then unmold on top of portabella. Top with another portabella, right side up. Serve with an avocado quarter.
Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Article history
The information on this page is peer reviewed by qualified clinicians.
16 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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