Add the coleslaw ingredients (except optional sesame seeds) to a large mixing bowl and toss. Set aside.
In a separate smaller bowl, prepare the dressing by adding all ingredients (except water) and mixing until it becomes thick and smooth. Add in the 3 tablespoons of water and stir until you create a creamy dressing consistency. If you’d like a thinner consistency, add an additional tablespoon of water. Add a squirt of Sriracha sauce for heat, if you’d like.
Pour the dressing over the coleslaw and toss until the mixture is well coated in peanut sauce. Cover and refrigerate for 30 minutes before serving to meld the flavors. Before serving, give it a good stir, then taste and add a dash of salt and pepper if needed. Garnish with additional peanuts and optional sesame seeds and dig in!