Source: Recipe adapted from
BBQ USA by Steven Raichlen
(Workman,
2003)
Method: Direct grilling
Serves: 4
Advance Preparation: 30 minutes for marinating the
mushrooms
For the marinade:
3 to 4 canned chipotle chiles with adobo sauce
3 cloves garlic, finely minced
1 small onion, chopped (about 1/2 cup)
2 tablespoons balsamic vinegar, or more to taste
1/2 cup vegetable oil
Coarse salt and freshly ground black pepper to
taste
4 portobello mushroom caps, wiped clean with a
dampened paper towel
1 large sweet onion, cut crosswise into slices,
then skewered
1/2 cup salted butter, melted
2 poblano chiles
For serving:
4 individual ciabatta rolls, or other rustic roll,
sliced in half
4 slices pepper Jack cheese
2 ripe avocadoes, pitted and sliced
In a blender jar or food processor, combine the
chipotle chiles, garlic, chopped onion, balsamic
vinegar, vegetable oil, and salt and pepper to
taste and blend until smooth.
Place the mushroom caps in a single layer in a
nonreactive baking dish, gill-side up, and pour the
marinade over them, working the marinade into the
gills with the back of a spoon. Cover and let
marinate, refrigerated, for 30 minutes to 1 hour.
Set up the grill for direct grilling using a
two-zone fire; preheat one zone to high and the
other zone to medium so you can move the mushrooms
over if they start to burn.
When ready to cook, remove the mushrooms from the
marinade, reserving the marinade. Brush the onion
slices with melted butter. Place the portobellos
(gill-side down), the onion slices, and the
poblanos on the grill grate. Grill for about 3
minutes, then turn with tongs. Spoon some of the
reserved marinade on the gill-side of the mushrooms
and continue to grill until tender and sizzling. If
the vegetables begin to brown too much before they
become tender, move them over the medium zone of
the grill.
Lastly, brush melted butter over the cut sides of
the ciabatta rolls and grill, cut sides down, for 1
to 2 minutes over the medium side of the grill, or
until they are golden brown.
To serve, remove the skewers from the onion slices.
Scrape the charred skin of the poblanos, remove the
stem end, and cut into quarters. Remove seeds
and/or veins. For each sandwich, place a mushroom
on the bottom half of a bun; top with a slice of
pepper Jack cheese, onion, poblano pepper, and
several slices of avocado.