In a bowl, stir your peanut butter, soy sauce, water, chili sauce, lemon juice and brown sugar. Stir until smooth and combined.
Heat 3 tablespoons of sesame oil over medium heat. Add garlic and ginger and cook for a 1 minute.
Reduce heat to low. Pour peanut butter mixture into the pan. Stir gently.
Add your cooked noodles to the sauce and toss with a tong. Tip in the red chili, most of the chopped peanuts, red chili flakes and broccoli. Toss everything well until combined.
Garnish with chopped parsley, leftover chopped peanuts, and sesame seeds. Serve immediately.