Recipe courtesy of the Mushroom Council
2 tablespoons olive oil
1/2 cup finely chopped yellow onion
8 ounces mushrooms, such as white button, crimini or portabella, finely chopped
1/2 pound lean ground beef
1 tablespoon taco seasoning
6 burrito-size flour tortillas (about 10 inches each)
1/3 cup nacho cheese sauce
6 tostada shells sour cream
6 mini soft taco-size flour tortillas (about 4 1/2 inches) shredd…
