Mushroom and Onion Vegetarian Tacos

1 tablespoon vegetable oil

1 medium red onion, sliced

3 large fresh portabella mushrooms, sliced, cut in half, stems removed

2 tablespoons Old El Paso® taco seasoning mix

2 tablespoons water

8 Old El Paso® flour tortillas for soft tacos & fajitas

1 cup guacamole

½ cup sour cream

½ cup crumbled queso fresco cheese

In 12-inch nonstick skillet, heat oil over medium-high heat. Cook onion in oil, stirring occasionally, until brown. Add mushrooms. Cook 6 to 8 minutes or until tender. Reduce heat to low. Add taco seasoning mix and water. Cook about 5 minutes or until water is absorbed. Remove from heat.

Spoon filling on tortillas. Add toppings. Roll up tortillas.