Step 1

Preheat your oven to 350°F. Lay out the tostada shells (or baked tortillas) on two rimmed baking sheets.

Step 2

Combine the chicken and 1 cup of the barbecue sauce in a small bowl, and stir to coat.

Step 3

Divide the chicken between the tostada shells and top with the cheese (about ¼ cup on each).

Step 4

Bake for 6 to 8 minutes, just until the cheese is melted.

Step 5

Remove from the oven and drizzle with the remaining ½ cup barbecue sauce. Sprinkle with green onions, if desired.