In a medium bowl, combine chicken, yogurt, garlic, ginger, garam masala, crushed red pepper and coriander and cumin powder. Mix well and set aside for 5 minutes.
In a small non-stick skillet, over medium heat, evenly spray cooking oil for 2 seconds. Add marinated chicken mixture and stir-fry for 4 to 5 minutes or until chicken is cooked and tender. Spray cooking oil for another 2 seconds, remove from heat and set aside to cool.
Finely chop the cooked chicken; add onions and tomatoes to the chicken to make the salad.
In a small bowl, make a paste by mixing avocado, sour cream and lemon juice; fold this paste into the chicken tikka salad and mix well.
To assemble the sandwich, spread the chicken tikka salad evenly on a slice of bread and cover with another piece of bread; trim the crust from the sandwich.
In a large non-stick skillet, or in a Panini maker, over medium-low heat evenly spray cooking oil for 2 seconds. Place the sandwich on the skillet (or in the Panini maker) and spray the top of the sandwich with cooking oil for another 2 seconds. Toast until golden brown and crisp.
Remove from heat and cut into triangles. Enjoy with Blackberry Chutney.
Serving Size 1 sandwich (104 gm)
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.