To heat forged iron pan, add remaining 1 Tbsp (15 mL) grapeseed oil and let heat for 30 seconds. Add onions and sauté, stirring often, till softened, about 4 minutes. Add garlic and bell pepper and proceed to cook dinner, stirring often, till softened and beginning to brown, about 10 minutes. Stir in cumin, coriander, and purple pepper flakes, and let cook dinner for 1 minute earlier than including canned tomatoes together with their juices, cilantro, and dill. Stir sauce collectively properly and let come to a simmer. At this level, in the event you favor a smoother sauce, use an immersion blender to purée sauce a bit. Nestle tofu into sauce and switch pan to oven for 10 minutes.