Melt butter in a large skillet with olive oil over medium heat.  Add tortilla and push down to coat bottom side, then immediately flip to coat other side.

Let tortilla cook until bottom is golden and beginning to crisp.

Remove tortilla and place on a work surface golden side up.  Place meat in an even layer over 1/2 of tortilla.  Drizzle evenly with BBQ sauce and then top with salad.  Fold the remaining half of tortilla over filling.  It will look like a giant taco with the uncooked side out.

Return to skillet and cook until bottom side crisps and then flip over and cook the other side.  Cut in half or 1/4s and serve with additional salad on top if desired.