Step 1

Prepare the cheese sauce according to the recipe link if using - otherwise skip to step 2

Step 2

Clean and slice the mushrooms.  Slice the caps into 1/2" thick strips.  Add to a 1-gallon ziplock.

Step 3

Whisk all marinade ingredients and pour over mushrooms.  Seal and let sit 30-60 minutes.

Step 4

In a separate bowl - whisk the sauce ingredients together - set aside

Step 5

Prep the veggies by slicing a tomato, 1 green pepper, 1/4 red onion, 1 scallion

Step 6

Prep the sandwich roll by slicing it in half and lightly toasting

Step 7

Cook the mushrooms and marinade in a large skillet over high heat.  Stir frequently until most of the liquid has evaporated away.

Step 8

Assemble sandwich by spreading both slices of roll with either cheese sauce or spread of your choice, followed by the red onions.

Step 9

Layer green bell pepper strips, tomato slices, and cilantro on one half

Step 10

Layer mushrooms, scallions, and a little sauce on the other half

Step 11

Put the 2 halves together and enjoy

Step 12

Note:  it IS a messy sandwich!  (but sooo good!)