Chicken Curry Casserole

INGREDIENTS:

1/4 c Vegetable oil
1 ts Cumin seed
1 c Chopped onion
1 1/2 ts Minced garlic
1 Fresh hot green chili; or to
-taste; seeded and minced
-(wear rubber gloves)
1/2 ts Salt
1 1/2 ts Ground cumin
1 1/2 ts Ground coriander
1 1/2 ts Garam masala (recipe
-follows)
1 cn (1-lb) crushed tomatoes
6 Skinless chicken thighs
1 sm Boiling potato
2 tb Minced fresh coriander
Garam masala (Indian mixed