First, lay down the extra-large tortilla on a large cutting board or a clean counter. If your tortilla came straight from the fridge, warm it up in the microwave for around 15 seconds. Doing this will make it more flexible and more comfortable to fold the tortilla.
Place the taco meat in the center of the tortilla. Spread it around, so it is roughly the same size as the tostada.
Evenly spread the salsa con queso or nacho cheese over the meat.
Place the tostada directly on top of the cheese sauce.
Spread the sour cream evenly over the entire tostada, from edge to edge.
Evenly sprinkle the shredded lettuce over the sour cream, followed by the diced tomatoes.
Optional, but I recommend to create a more authentic flavor: drizzle 1 to 2 tablespoons of the Taco Bell hot sauce over the top. ***Make sure you're adding all of the ingredients within the middle area of the tortilla. None of the toppings should expand further than the size of the tostada.
Place the small tortilla on top of everything and gently press it down ever so slightly.
Place a large saute pan over medium/medium-low heat. Once hot, add in one tablespoon of vegetable oil.
Now, begin folding the outside edges of the extra-large tortilla onto the center of the smaller tortilla, holding each edge with one hand the entire time, so the wrap doesn't pop back open. Do this as tight as you can, but be gentle to avoid the tortilla from tearing. I find myself folding the edges over 8 times.
Gently pick the crunchwrap up, with one hand still holding all of the edges down in the center, and carefully flip the FOLDED SIDE down in the prepared saute pan.
Press the crunchwrap down gently and move it around to get it evenly coated in the oil, so it cooks and browns evenly. Cook for about 2-3 minutes, or until it is perfectly golden brown and crispy.
Add the other tablespoon of vegetable oil into the saute pan and then immediately flip the crunchwrap over so the uncooked side soaks up the oil. Cook for another 2-3 minutes, or until golden brown and crispy.