Add portobello slices to hot skillet with a tablespoon of olive oil. Cook 4-5 minutes or until they begin to release their liquid.
Add chopped onion and sprinkle with salt, continue to cook until most of the liquid has evaporated & the onions are softened.
Add balsamic glaze and toss to fully coat mushrooms. Cook for another minute or two to let the mushrooms absorb the glaze.
Smear adobo sauce onto warmed tortillas.
Place a scoop of cooked balsamic portobello mixture on each tortilla.
Place a scoop of cooked balsamic portobello mixture on each tortilla.