Spicy tomato and pepper curry

This is a riff on North Indian tomato curry, a slightly sweet and spiced onion- and tomato-based vegetarian dish. Here, sliced bell peppers get added alongside the tomatoes to stew down until tender. The fenugreek seeds are optional, but they impart a unique nutty, maple-like flavor that complements the sweetness of the peppers and tomatoes. For less heat, omit the serrano chiles altogether. For a heartier meal, serve with grilled meat or fish or create divots in the skillet of curry for simmering eggs.