Line a baking sheet with parchment. Preheat oven to 350°F.

Use a rolling pin to roll your dough out into a large rectangle. Spread the mustard, evoo and caramelized onions on the dough leaving a half-inch border on the sides and 1 inch border at the bottom. Layer turkey and spinach over top.

Using two hands start at the top ad roll dough in on itself until reaches the bottom. Pinch in the sides and place on prepared baking sheet. Brush with remaining evoo.

Bake for 25-30 minutes, until browned, serve with extra mustard.