How should I modify my recipe to make double chocolate cookies?

Hiya! I was considering a side hustle selling cookies to my friends and fellow students on campus. Since I don’t have *too* much free time, I wanted to keep it simple and focus on chocolate chip cookies, with some limited options for mix-ins for extra.

I was wondering how feasible it would be to have an option for chocolate cookies as well. And if it’s easily done, how might I modify my current recipe?

(~2 Dozen)

10oz Browned Butter

1 cup white sugar

1 1/2 cups Brown sugar

2 Tbsp toasted milk powder

2 large eggs

2 tsp vanilla extract

3 Cups AP flour

1 tsp baking soda

3/4 tsp baking powder

1 tsp salt

1 1/2 cups Mix-Ins