Warm your tortillas: The 12" tortillas are oversized and may not fit in your pan—just rotate them gently to warm.
In the center of each tortilla, add a scoop of taco meat and a spoonful of nacho cheese.
Place a tostada shell on top, press gently, and give it a twist to spread the fillings.
Layer with sour cream, shredded lettuce, and diced tomatoes.
Fold: Starting at one edge, fold the tortilla up and over the center, then continue folding around in a circular motion until it's sealed.
Toast: Place the folded side down in a dry skillet over medium heat. Toast until golden, then flip and toast the other side.
Serve: Slice in half or enjoy as-is!
