Spread a thin layer of beans on one side of a flour tortilla in the shape of the tostada. Top with the baked tostada. Spread another thin layer of beans on top of the tostada. Add the salsa and desired veggies to the beans.
Fold the sides over the fillings tightly, but not so tight as to rip the tortilla sides. If there is small uncovered hole in the center use a small piece of another tortilla to fill the hole from the inside.
Heat a large frying pan to medium heat and spray with a small amount of cooking spray. Lay the folded side down first and fry until golden brown. Flip and serve immediately. ENJOY!