Lightly coat a large skillet with cooking spray
Heat skillet over medium high heat
Add chicken thighs meaty sides down cook about 6 minutes or until brown on both sides turning once
Coat a 312 or 4 quart slow cooker with cooking spray or line the slow cooker with a disposable liner
In the slow cooker combine potatoes onion ginger and garlic
Top with chicken
Sprinkle with salt and pepper
Pour broth and tomato sauce over all
Cover and cook on low heat setting for 5 hours or on high heat setting for 3 hours
If using low heat setting turn cooker to high heat setting
Stir in peas yogurt and garam masala
Cover and cook for 15 minutes more
