Prepare basmati rice according to package directions and set aside.
Dice the chicken breast into 1-inch cubes and season with sea salt, black pepper, and half of the garam masala.
Heat ghee in a large skillet over medium-high heat and sear the chicken until golden brown on all sides, then remove from the pan.
In the same skillet, add the diced onion, minced garlic, and grated ginger, sautéing until the onion is translucent and fragrant.
Stir in the remaining garam masala, ground turmeric, and ground cumin, cooking for 1 minute to toast the spices.
Pour in the tomato puree and coconut milk, stirring to combine and scraping up any browned bits from the bottom of the pan.
Return the chicken to the skillet, reduce heat to low, and simmer for 8-10 minutes until the sauce has thickened and chicken is cooked through.
Serve the chicken tikka masala over the fluffy basmati rice and garnish with chopped fresh cilantro.