Make seasoned beef. Heat a large skillet over medium heat with a little oil. Cook the ground beef until no pink remains, then add the taco seasoning. Stir until evenly distributed then add the tomato paste and cook for another minute. Remove from the heat and transfer to a covered bowl.
Add queso and meat layer. Place a warmed burrito size tortilla on a cutting board. Spread an even layer of the cashew queso in the center followed by a couple spoonfuls of seasoned ground beef on top, but don't overfill it.
Add the remaining toppings. Spread a thin layer of dairy free sour cream on the tostada shell and place on top of the meat layer, with the sour cream face up. Sprinkle a small handful of chopped tomatoes and shredded lettuce on top.
Place the small flour tortilla on top of the tomato and lettuce layer then tightly fold the edges of the large tortilla toward the center, creating pleats. Quickly invert it so the pleats are touching the cutting board and the bottom is facing up. This helps to seal the folds.
Pan sear. Heat a large skillet over medium heat with bit of oil. Once warm, use a large spatula to carefully transfer the wrap to the pan, pleat/seam-side down. Press lightly on the crunchwrap. Sear until golden brown, then flip to crisp the other side. Cut in half and serve immediately.