1Place cashews in a bowl with two cups of water. Soak for 4 hours. Drain and rinse.
2Wash onions and slice into even 1/4" thick rings.
3Fill a large bowl with 1.5 gallon of water. Stir in lemon juice and salt.
4Separate onions into individual rings and immerse in the water. Cover bowl with foil and let the onions soak for 2 hours.
5Drain and rinse the onions after soaking. Pat onions dry.
6In a high speed blender, combine soaked cashews, sesame seeds, orange juice, dates, and 1/2 tsp sea salt. Blend until smooth, adding up to 1/4 cup water a bit at a time if needed. The batter should be a thick consistency.
7Pour batter into a bowl.
8Dip onion rings into batter to completely coat them. Place battered onion rings on an Excalibur Dehydrator tray lined with a ParaFlexx sheet. Keep onion rings in an even layer. They should not be overlapping or touching.
9Dry at 115° F for 6-8 hours, then flip onion rings and dry for 12-16 more hours or until crisp.