16ouncesBaby bella or white mushrooms, thickly sliced
2tablespoonsolive oil, divided
1tablespoonsoy sauce
1tablespoonall-purpose flour
1teaspoondry oregano
1red bell pepper, sliced
1green bell pepper, sliced
2largeonionswhite, yellow, and red all work
½teaspoonsalt
46" sub rolls
4slicesprovolone cheese
Instructions
To make the caramelized onions: In a large skillet, heat 1 tablespoon olive oil over medium heat. Saute the sliced onions for 10 minutes, until lightly browned. Sprinkle with ½ teaspoon salt and lower the heat to medium low. Stir the onions every 7-10 minutes. They're ready when golden brown and sweet.
In a medium skillet, heat 1 tablespoon of olive oil over medium heat. Saute the mushrooms and peppers until the mushroom release most of their juices, about 7-8 minutes.
Sprinkle mushrooms with soy sauce and oregano. To thicken the mushrooms and their juices, sprinkle with 1 tablespoon of flour, stirring to brown.
Melt the provolone cheese by placing each slice over a section of mushrooms and peppers. Cover the pan with a lid to melt.
Scoop the melted cheese and mushrooms onto a toasted sub roll. Top with caramelized onions and enjoy!