Preheat oven to 350 degrees F & line 2 round cake pans with parchment paper
Combine the dairy free milk with 1 tbsp vinegar, stir and set aside to form buttermilk.
In a medium bowl, combine gluten free flour, cocoa powder, baking soda, and salt together and set aside.
In a larger bowl, cream together your butter and sugar.
Add buttermilk, tofu, vinegar, and vanilla to the butter and sugar and use a hand mixer to combine.
Add the dry ingredient mixture to the wet mixture and use hand mixer to combine.
Fold in your chocolate chips.
Divide the batter evenly between the two cake pans and bake for 30 - 35 minutes.
Allow to cool completely before removing from the pans