Crush crackers into coarse crumbs. Sprinkle half of crumbs in bottom of ungreased 13x9-inch (3-quart) glass baking dish. Cut and remove carton from dulce de leche ice cream. Cut ice cream into 1/2-inch-thick slices. Arrange slices over crumbs, overlapping slightly. Spread ice cream with spatula until even pressing down firmly. Freeze 1 hour or until firm.