1. Sambar powder recipe
here.
2. Sambar powder can be replaced with ½ tsp levelled coriander powder and ½ tsp heaped plain chilli powder. Increase chilli powder as per your spice level.
3. Groundnut oil can be replaced with any oil of your choice.
4. You shall skip chopped garlic and add ½ tsp ginger garlic paste after frying onions and saute until raw smell leaves, and then add tomato. Garlic or ginger-garlic paste is required to avoid gastric issues, while consuming Kidney beans.
5. Cashews are optional and can be skipped.