Lamb Seekh Kebabs

Ingredients

• 1⁄2 medium red onion, finely chopped, plus 1 medium red onion, thinly sliced with the grain
• 1⁄3 cup finely chopped cilantro
• 3 medium cloves garlic, finely minced (1 Tbsp.)
• 2 tbsp. finely chopped fresh mint
• 1 tbsp. fresh ginger, finely minced
• 1 serrano chile, stemmed, seeded, and finely chopped (1 Tbsp.)
• 1 tbsp. ground coriander
• 1 tbsp. kosher salt
• 2 tsp. ground cumin
• 1⁄2 tsp. Indian red chile powder, or substitute cayenne
• 1⁄2 tsp. Kashmiri chile powder, or substitute paprika
• 1⁄2 tsp. ground turmeric
• 1⁄4 tsp. garam masala
• 2 ½ lb. ground lamb
• 1⁄2 cup melted ghee or unsalted butter, for basting
• Naan, for serving
• Lime wedges, for serving
• Cilantro-mint chutney, for serving