Rinse the basmati rice under cold water until clear, then combine with 0.5 cup water in a small pot, bring to a boil, reduce to low, cover, and simmer for 15 minutes.
While rice cooks, dice the chicken breast into bite-sized pieces and season lightly with a pinch of sea salt and black pepper.
Heat the ghee in a large skillet over medium-high heat and sear the chicken until golden brown on all sides, then remove and set aside.
In the same skillet, add the minced garlic and grated ginger, sautéing for 1 minute until fragrant before stirring in the garam masala, turmeric, and cumin.
Pour in the tomato puree and coconut milk, stirring to combine the spices into a smooth, velvety sauce.
Return the chicken to the skillet, reduce heat to low, and simmer for 5-7 minutes until the sauce thickens and the chicken is cooked through.
Fluff the rice with a fork and serve the spiced chicken on top, garnished with freshly chopped cilantro.