Combine the oil, spinach, garlic, yogurt, and salt in a food processor and process until evenly mixed.
Make your life really easy by using a piping bag or strong ziplock bag with a ~3cm hole cut in it to pipe the dip onto the endive boats. Or you can use two spoons to place a dollop onto each endive.
Place the endive appetizers on a serving tray. If you are having trouble getting them to sit upright as I did, you can use a dab of leftover dip to “glue” them to the tray. Chill at least an hour before serving. Top each dollop with a pinch of breadcrumbs before serving.
Note: the healthy spinach dip can be made ahead to cut down on prep time on party day!