Rub the steak with the fajita seasoning and vegetable oil, then let sit at room temperature for 30 minutes.
2. Step
In a large skillet over medium-high heat, add the seasoned steak and cook until it begins to brown, about 3 minutes. a large skillet over medium-high heat, add the seasoned steak and cook until beef begins to brown, about 3 minutes.
3. Step
Add the mushrooms and cook until tender, about 5 minutes.
4. Step
Serve the fajitas with the tortillas, salsa, beans, and rice.
