To the same pan placed over medium-high heat, add oil and ghee.
Add onions. Sauté, stirring occasionally, for about 2-3 minutes or until browned.
Add minced ginger and garlic. Sauté, stirring, for 1 minute or until fragrant.
Add ground turmeric, ground cumin, ground coriander and red chili powder. Sauté, stirring, for a few seconds or until aromatic.
Add tomatoes. Sauté, stirring occasionally, for about 4-5 minutes or until mushy.
Add cream, garam masala and fenugreek leaves. Stir to combine.
Add water if the sauce is too thick.
Bring to a boil.
Simmer for about 4-5 minutes.
Add kebabs.
Sprinkle with coriander (cilantro) leaves. Stir. Cook for another 2-3 minutes.
Garnish with chopped coriander (cilantro) leaves.
Serve with naan or rice.