James Carrier
Makes 4 servings

For this burger recipe, buy mushrooms with stems trimmed, or trim the stems and save for other uses.

How to Make It

Step 1

Rinse and drain mushrooms, then rub lightly with oil.

Step 2

Lay the mushroom caps, cup (gill) sides down, on a barbecue grill over a solid bed of hot coals or high heat on a gas grill (you can hold your hand at grill level only 2 to 3 seconds); close lid on gas grill.

Step 3

Cook until juices start to drip from the mushroom caps, about 5 minutes. Turn caps over and continue to cook until mushrooms are flexible and no longer firm when pressed, 5 to 7 minutes longer.

Step 4

Lay an equal portion of the red peppers in each cap and cover with cheese. Continue cooking until cheese melts, about 3 minutes.

Step 5

As cheese melts, split buns, butter if desired, and lay cut sides down on grill until lightly toasted.

Step 6

Set a mushroom cap on each bun base, season with salt and pepper to taste, add a mound of watercress, and cover with the bun top.

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