Preheat the oven to 350 degrees F. Set 4 oven-safe cereal bowls on a large rimmed baking sheet. Then set a large 12-14 inch skillet on the stovetop over medium heat.
Pour 1 tablespoon oil into the skillet. Once hot, place the tortilla in the skillet. Use tongs to swirl the tortilla to coat it in oil, flip it over, and swirl it again. It needs to be coated in oil, on both sides, right away.
Pan-fry the tortilla for 30-45 seconds per side, allowing it to puff up with large bubbles. (The bigger the bubbles the better!) Flip and repeat. Make sure the tortilla isn't turning dark. It should be golden-brown.
Use tongs to move the tortilla to one of the cereal bowls. Tuck it down into the bottom of the bowl, to create a bowl shape with the tortilla. Take care not to deflate the bubbles.
Repeat with the remaining three tortillas. Once all the tortillas are flash-fried and shaped into bowls, bake for 9-10 minutes until very crispy. Cool and fill.
Fill with chopped greens and sprinkle with your favorite Taco Salad toppings.