The majority of plastic cutting boards are made from a plastic resin known as HDPE, or high-density polyethylene. HDPE is the same No. 2-marked plastic as items like laundry detergent bottles. When it comes to cutting boards, HDPE boards are the preferred choice because they can be sanitized and used to keep food prep healthy. But what you may not know is that HDPE is also recyclable. When it's time to replace your plastic cutting board, toss it into the recycling bin. Because it's a No. 2 recyclable plastic, it can be recycled and turned into new products.