To make a more traditional style casserole, leave out the kale and chickpeas and use a 32-ounce package of hash browns instead.
Be sure to buy diced hash browns with no oil added. They should contain about 70 calories and no fat per serving. If they aren't available, peel and cut regular potatoes into 1/2-inch cubes.
Nutrition, per serving, without cashews or tahini: 209 calories, 21 calories from fat, 2.6g total fat, 0mg cholesterol, 489.6mg sodium, 764.1mg potassium, 37.3g carbohydrates, 8g fiber, less than 1g sugar, 13g protein.