In a large skillet over medium-high heat, heat the oil. Add the onion and bell pepper and saute for 4 to 5 minutes, or until the bell peppers become tender. Add the garlic and saute for 2 minutes.
Stir in the taco seasoning, Improved Shreds, and salt, and cook for 4 to 5 minutes, until evenly coated with seasoning and lightly browned.
Add the taco meat filling to the tortillas and garnish with lettuce, tomato, and avocado.
Servings 0