Step 1

For the marinade: Heat the mustard seed oil in a small saucepan over medium heat. Add the besan and stir constantly until golden brown and toasted, about 2 minutes. Remove from the heat and set aside.

Step 2

Place the yogurt, lime juice, tandoori masala, paprika, chili powder, mustard powder, turmeric, garlic, chiles, ginger, fenugreek leaves (if using), reserved besan mixture and 1 tablespoon salt in a large bowl and mix well. It should have the consistency of hollandaise sauce; if it’s too thick, add 1 or 2 tablespoons water and mix well.

Step 3

For the skewers: Gently mix together the paneer and just enough marinade to coat in a medium bowl, being careful not to break the paneer. Add the tomatoes, peppers and onions to the bowl with the remaining marinade and toss until thoroughly coated. Cover both bowls and refrigerate for at least 2 hours and up to 8 hours.

Step 4

When ready to grill, preheat a grill to medium-high.

Step 5

Meanwhile, thread the tomatoes, peppers, onions and paneer in an alternating pattern on 12 metal skewers, letting any excess marinade drip off, and place on a rimmed baking sheet.

Step 6

When the grill is hot, lightly oil the grates. Lay the skewers on the grates and grill, uncovered, until grill marks form on the bottom of the paneer, about 3 minutes. Flip the skewers, brush with the melted butter and cook just until grill marks form on the other side, about 3 minutes more. (It’s important not to overcook the paneer as it can become hard and rubbery.)

Step 7

Slide the paneer and vegetables off the skewers onto a platter. Garnish with cilantro and drizzle with some Cilantro-Yogurt Chutney. Serve with the remaining chutney for dipping.

Step 8

Combine the cilantro, yogurt, chiles, garlic, lime zest, lime juice and 1/2 teaspoon salt in a blender and process until smooth. It should be the consistency of a creamy salad dressing. If it’s too thick, add 1 to 2 tablespoons water. Taste and add more lime juice and/or salt, if needed.