Heat large skillet with a generous dab of butter and two large handfuls spinach. Salt spinach and saute until wilted, then push to side or remove. Add a bit more butter and a spoonful of siracha to pan, then add tortillas and begin to fry. Flip, adding more chili oil or hot sauce as desired. As the second sides fry, top each tortilla with spinach and 1/4 of an avocado. Press in half, do a final few seconds of frying on each side, and enjoy hot out of the pan.
To scale up - use an electric griddle and as many corn tortillas as you want!