Sauté the Aromatics: Heat the oil in a large skillet over medium-high heat. Add the diced onion, chopped garlic, ginger, and chile pepper. Sauté for 2–3 minutes, stirring occasionally, until the vegetables begin to soften and become fragrant. Add the Vegetables: Add the diced potato, halved Brussels sprouts, and thinly sliced carrot to the skillet.Toss thoroughly so the vegetables are coated with the aromatic mixture. Build the Curry Sauce: Pour in the coconut milk, then add the tahini, turmeric, rice vinegar, agave, soy sauce, salt, and black pepper. Stir well to combine the ingredients and evenly coat the vegetables.
Simmer the Curry: Bring the mixture to a gentle simmer, then cover the skillet. Reduce the heat to medium-low and cook for 5–10 minutes, or until the potatoes and Brussels sprouts are cooked through and tender.
Toast the Sesame Seeds: While the curry cooks, place the sesame seeds or chopped nuts in a small pan over low heat.Toast until they turn golden, watching them closely as they cook. Adjust the Seasoning: Taste the finished curry and add additional salt or black pepper as needed.
Finish and Garnish: If using, top the curry with chopped cilantro and the toasted sesame seeds or nuts.Drizzle with the optional 1 teaspoon sesame oil for additional sesame flavor. Serve: Serve the Brussels Sprouts Curry over rice, noodles, or quinoa.