vegan sweet potato spice cake

Ingredients For vegan sweet potato spice cake

• 1/2 lb

  (or 2 sticks) earth balance margarine, plus 1 tsp.
• 1 c

  packed light brown sugar
• 1 c

  turbinado sugar
• 2 c

  mashed cooked sweet potatoes (about 2 lbs. raw sweet potatoes)
• 6 tsp

  ener-g egg replacer
• 8 Tbsp

  warm water
• 3 c

  all purpose flour
• 1 tsp

  baking soda
• 1 tsp

  baking powder
• 1/2 tsp

  salt
• 1 tsp

  cinnamon
• 1 tsp

  ground ginger
• 1/2 tsp

  allspice, ground
• 1/4 tsp

  grated or ground nutmeg
• 1 c

  chopped toasted walnuts (optional)
• 1/2 c

  orange juice
• 1 tsp

  pure vanilla extract
• ORANGE GLAZE INGREDIENTS
• 1 1/2 c

  confectioners' sugar
• 2 Tbsp

  orange juice (or slightly more as needed)
• 1 tsp

  grated orange zest (optional)