Prepare a 13x9 inch rectangle cake pan. If nonstick, no further steps needed. If not nonstick, line with parchment paper or lightly spray. Set aside.
Add all ingredients to a food processor fitted with a metal blade. Pulse until formed into a sticky dough. Remove from food processor and press into a 13X9 inch non stick pan. If do not have nonstick, line with parchment or lightly spray.
Place in freezer to set while getting started on next layer.