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Portobello Mushroom Burgers

Portobello Mushroom Burgers
59 min · 46 min active · makes ~230 ml · Medium

A substantial vegetarian burger built around a whole portobello mushroom, marinated in olive oil, balsamic vinegar, garlic, thyme, and smoked paprika, then griddled until tender and topped with melted provolone. It sits on a toasted brioche bun with Dijon mayonnaise, crisp lettuce, beef tomato, and red onion — deeply savoury, with a pleasing contrast of textures throughout.

Ingredients
0/15 gathered · 4 servings
4tbsp
2clove
1tbsp
1tsp
0.5tsp
0.5tsp
0.5tsp
4tbsp
2tsp
halved4piece
1piece
0.5piece
stems trimmed4piece
4slice
4piece
Tools
11 items
Serveware
1 item
Hygiene

Wash your hands after the raw beef tomato and beef; disinfect the cutting board and knife after the raw beef tomato.

Procedure
39 steps
1 of 39

Add olive oil

Olive oil · 4 tbsp
15s
ResultOlive oil
2 of 39

Mince the 2 garlic cloves

Garlic clove · 2 clove
1 min
ResultMinced garlic
3 of 39

Add the minced garlic to the vinaigrette marinade bowl

15s
ResultMinced garlic and olive oil
4 of 39

Add the balsamic vinegar, dried thyme and smoked paprika to the vinaigrette marinade bowl

Balsamic vinegar · 1 tbspDried thyme · 1 tspSmoked paprika · 0.5 tsp
35s
ResultGarlic vinaigrette
5 of 39

Add salt

Salt · 0.5 tsp
10s
ResultSeasoned herb vinaigrette
6 of 39

Add black pepper

Black pepper · 0.5 tsp
10s
ResultHerb vinaigrette marinade
7 of 39

Whisk the herb vinaigrette marinade

1 min
ResultHerb vinaigrette marinadeused in step 25
8 of 39

Add the mayonnaise to the dijon mayonnaise bowl

Mayonnaise · 4 tbsp
15s
ResultMayonnaise
9 of 39

Add dijon mustard

Dijon mustard · 2 tsp
10s
ResultMayonnaise and Dijon mustard
10 of 39

Mix the mayonnaise and Dijon mustard

1 min
ResultDijon mayonnaise
11 of 39

Set aside the dijon mayonnaise in the dijon mayonnaise bowl

1s
ResultDijon mayonnaise
12 of 39

Preheat the griddle

medium-high heat
2 min
ResultHot griddle pan
13 of 39

Add the 4 brioche burger buns to the frying pan

cut-side down
Brioche burger buns · 4 piece
30s
ResultBrioche burger buns
14 of 39

Pan-fry the brioche burger buns

Look for
until golden
medium heat
1 min
ResultToasted brioche bunsused in step 22
15 of 39

Slice the beef tomato

Beef tomato · 1 piece
1 min
ResultSliced beef tomatoused in step 35
16 of 39

Wash your hands with soap — you've been handling raw beef tomato

30s
17 of 39

Wash and disinfect the cutting board — it's held raw beef tomato

1 min
18 of 39

Wash and disinfect the knife — it's cut raw beef tomato

30s
19 of 39

Slice red onion

Red onion · 0.5 piece
2 min
ResultSliced red onionused in step 38
20 of 39

Spread the toasted brioche buns over the dijon mayonnaise

over the cut sides of all buns
1 min
ResultSpread toasted brioche buns
21 of 39

Rinse the 4 portobello mushrooms

under cold running water
Portobello mushrooms · 4 piece
30s
ResultRinsed portobello mushrooms
22 of 39

Add the rinsed portobello mushrooms to the baking tray

gill-side up
30s
ResultPortobello mushrooms
23 of 39

Add the herb vinaigrette marinade from the small bowl

spoon marinade over mushrooms
1 min
ResultWhisked black pepper and portobello mushrooms
24 of 39

Marinate the whisked black pepper and portobello mushrooms

10 min
ResultMarinated portobello mushrooms
25 of 39

Transfer the marinated portobello mushrooms from the baking tray onto the griddle

gill-side down
30s
ResultMarinated portobello mushrooms
26 of 39

Grill the marinated portobello mushrooms

Look for
until marked — gill-side down
medium-high heat
4 min
ResultGrilled portobello mushrooms
27 of 39

Flip the grilled portobello mushrooms

30s
ResultFlipped portobello mushrooms
28 of 39

Grill the flipped portobello mushrooms

Look for
until tender and well marked
medium-high heat
3 min
ResultGrilled portobello mushrooms
29 of 39

Add the 4 provolone cheese to the griddle

lay one slice on each mushroom
Provolone cheese · 4 slice
30s
ResultGrilled portobello mushrooms and provolone cheese
30 of 39

Cover the grilled portobello mushrooms and provolone cheese with the lid

Look for
heat until cheese melts
medium-high heat
1 min
ResultGrilled mushrooms with melted cheeseused in step 37
31 of 39

Rinse the 4 lettuce leaves

under cold running water
Lettuce leaves · 4 piece
30s
ResultRinsed lettuce leaves
32 of 39

Add the rinsed lettuce leaves

one leaf on each bottom bun
1 min
ResultAssembled burger bottom
33 of 39

Add the sliced beef tomato

one slice of tomato on each lettuce leaf
1 min
ResultAssembled burger bottom
34 of 39

Wash your hands with soap — you've been handling raw beef

30s
35 of 39

Add the grilled mushrooms with melted cheese from the griddle

one cheesy mushroom on each tomato slice
1 min
ResultAssembled burger bottom
36 of 39

Add the sliced red onion

a few slices of red onion on each mushroom
1 min
ResultAssembled burger bottom
37 of 39

Add the toasted brioche buns and assembled burger bottom on the serving plate

cap with the top buns
1 min
ResultPortobello Mushroom Burgers
Total Time59 min
Nutrition
per serving
Estimated · pre-cooking · 73% ingredients covered
NutrientPer serving
342kcal
9g
33g
9g
3g
1g
0.6g
717mg
Ingredients0/15
Tools0/9