Step 1: Sift first five dry ingredients (flour, cocoa powder, baking powder, baking soda and salt) together.
Step 2: Blend wet ingredients (tofu, soy milk, maple syrup, canola oil, vanilla extract, and lemon juice) in blender.
Step 3: Mix wet and dry ingredients with whisk in bowl, and slowly add the chocolate chips.
Step 4: Bake at 350 degrees for 35 to 45 minutes (when toothpick comes out clean) in greased, straight-edged muffin tins.
Step 5: Dust with confectioner's sugar.