Marinade of balsamic vinegar and oil 4 ounces portobello mushroom 1 ounce unsalted butter 1/4 ounce red bell pepper, diced 1/4 ounce minced garlic 2 ounces julienned yellow onion 2 slices Monterey jack cheese 7-inch French baguette, sliced 1/4 ounce Read More …