Using a double boiler, gently melt unsweetened chocolate and chocolate chips. (If you don't have a double boiler, simply bring 3 inches of water to a low boil in a small sauce pot and place a metal or glass bowl on top.) It is important for the bowl not to touch the boiling water or you may burn the chocolate.
Place tofu, melted chocolate, vanilla, honey, cocoa powder, stevia and sea salt in a food processor or good quality blender. Blend until smooth.