Preheat oven to 400°, with rack in center. Line standard muffin pan with cupcake liners; for tall muffins, use jumbo cupcake liners. Spray with nonstick cooking spray and set aside.
Put Grain-Free Pancake Mix into bowl of food processor or strong blender and mix for a minute or two; this will make flour finer for a lighter muffin.
In a large bowl, thoroughly mix together eggs, maple syrup or honey, vanilla, orange extract, coconut milk, and orange zest, if using.
In a medium bowl, whisk together Grain-Free Pancake Mix, salt, baking powder, baking soda, and nutmeg. Add to egg mixture and stir until just evenly mixed, then fold in the cranberries.
Fill standard muffin cups about two-thirds full; for tall muffins, fill jumbo liners until batter reaches just above top of muffin pan.
Bake for 16 to 20 minutes until muffins are firm to the touch and a toothpick comes out clean. Cool on a rack until cool enough to handle.
NOTE: Muffins made with maple syrup are sweeter than those made with honey.