Preheat the oven to 350F. Line a baking sheet with parchment paper.
In a large microwavable bowl, add the butter and microwave until melted. Use a fork to dissolve/mash up the miso into the butter (it will be a little lumpy, that’s fine). Whisk in the sugar, tahini, egg, and vanilla until smooth.
Add the almond flour, oats, baking soda, and salt and use a rubber spatula to stir until combined. Stir in the chocolate chips.
Add sesame seeds to a small bowl.
Use a medium cookie scoop or heaping tablespoon to scoop and roll into ping-pong size balls and then roll them into the sesame seeds and place on the baking sheet. If you start to run low on sesame seeds, just add more or bake some without the sesame seeds.
Bake for about 12-15 minutes, or until golden on the edges and bottom.