Step 1

Remove the stems of the portobello mushrooms. Mix the remaining ingredients together (soy sauce through to salt and pepper in a large and deep bowl.

Step 2

Toss the mushrooms in the marinade. Cover and leave to marinate for 1 hour (up to overnight) in the fridge). Every so often, turn the mushrooms over in the marinade so they all get evenly coated in the marinade.

Step 3

Warm a large grill (or bbq) over high heat. Spray grill with a non-stick cooking spray. Grill the mushrooms on each side for about 3-4 minutes (7-8 minutes total). Brush the mushrooms with the marinade while grilling.

Step 4

When the mushrooms are nicely grilled and cooked through, remove from the grill and serve warm! I love these portobello burgers with mashed potatoes, pasta, and as burger in a bun.