Preheat oven to 400 F. Line a muffin pan with paper or silicone liners or spray well with non-stick spray.

In a large mixing bowl, combine the dry ingredients. In a medium bowl, whisk the Ener-G egg replacer powder with the water until foamy. Add the remaining wet ingredients and stir to combine.

Add the wet ingredients to the dry and stir just until combined. Do not over-stir. Batter will be very heavy. Spoon into muffin cups, dividing batter equally among the cups. Sprinkle the center of each muffin with a little Cinnamon Crumb Topping, if desired, and bake until a toothpick comes out clean, about 20 minutes.