In a frying pan, saute onion and garlic in canola oil until browned. Transfer to a large bowl and mix together with cooked rice, ground chicken breast, and remaining ingredients. Refrigerator for 1 hour.
Divide mixture into 6 equal parts. Roll into sausage shape. Or if you prefer, you can pipe mixture into 6 sausage shapes. Place on sheet pan.
Roast in oven at 350 F for 5 to 10 minutes, until the internal temperature is 125 F. Then transfer to grill to finish cooking. The brats are not fully cooked until they reach an internal temperature of 165 F.