Prepare the steak by cutting it into small strips or cubes.
The onions should be sliced in half moons. Make they’re all about the same size.
Add onions in a single layer, move around to spread the oil and then let sit for a minute. Transfer the onions to a plate and set aside.
To the same skillet, add the bistec strips and season with the salt, pepper and ancho chile. Add the garlic and mix to incorporate into the steak.
Add the onions back in, mix and cook for another 5 minutes or until the steak is nice and tender. Serve immediately while warm.
Serve on a plate with Mexican Rice and Refried Beans. Serve with a tall glass of Horchata, Agua De Piña, or a refreshing Agua De Pepino. Enjoy!