Preheat Oven to 350°
Line a 9-inch round pan or an 8-inch by 8-inch square pan with parchment paper.
Melt the chocolate and butter together either in the microwave or in a double boiler.
Combine the aquafaba and sugar to to a mixing bowl. Then with a hand mixer, beat up sugar and aquafaba for about 5 minutes. It should be think and shiny.
Pour the melted chocolate into the bowl with the aquafaba and mix with the hand mixer for just a minute, till fully incorporated.
Add the flour to the mixture. I like to sift the flour to remove lumps. Mix with the hand mixer for about 1 minute until the flour is fully incorporated. Add the chocolate chips.
Transfer the cake batter into the pan. Make sure you lined it with parchment paper beforehand.
Bake for 30 minutes. Let cool and serve.