Preheat the oven to 350ºF. Cut each tortilla into 8 pieces and spread out on a large baking sheet (or two, depending on the size) so that there is minimal overlap.
Once the tortilla chips are crisp and golden, scatter with the asparagus pieces. Evenly distribute the cheese over the top and grill for 2-3 minutes until the cheese is melted.
To serve, sprinkle with the sliced radishes, diced avocado and a handful of watercress or pea shoots. Drizzle generously with the sauce and dig in!