You can double the chicken using this method - you will need to double the marinade though.
Add marinade ingredients to mixer bowl. Blend for 2 sec/speed 9/MC on. Scrape bowl down and repeat 3 times.
Scrape mixer bowl out completely into a large bowl and coat chicken pieces. Allow to marinade while continuing the next steps.
Add tomato paste ingredients to mixer bowl. Blend for 1 min/speed 8/MC on. Set tomato paste mixture aside in a separate bowl.
Without washing the bowl, add onions and chop 5 sec/speed 5/MC on. Scrape bowl down.
Add remaining gravy ingredients. Cook for 5 min/100°C or 212°F/speed slow/reverse/simmering basket on top of lid.
Transfer to a slow cooker with reserved tomato paste mixture and chicken. Cook on low for 4-5 hr or high for 2-3 hr.
With 30 min to go, stir through cream and honey. If you would like to thicken the sauce further, you can add additional cashew meal.
Stir through chopped coriander, cover and let it stand to infuse. Taste and season with additional salt if required.