Let the spinach defrost partially while you prepare the rest.
Chop the chicken breasts into bite-size pieces. Finely chop the onion. Finely chop the garlic. Keep them separated.
Heat the oil in a skillet or a non-stick pan. Cook the onion on medium-low heat, stirring often, until translucent, about 3-4 minutes. Add the garlic and stir for another minute.
Add the spice mixture and stir for another minute.
Add the chicken and the tomato paste. Stir well to coat the chicken with the tomato paste and the spices. Cook for 2-3 minutes, stirring often.
In the meantime, chop the tomatoes into small cubes. Add them to the skillet together with the milk, vegetable stock, and cream cheese. Stir well until the cream cheese is incorporated. Add the spinach as well.
Cover the pan leaving a crack open and cook for 5-7 minutes until the spinach is fully thawed, the chicken is cooked through and the sauce is slightly thickened.
Serve with rice.
Video
Notes
Check how hot the curry powder is and use accordingly. Mine was mild.