Preheat a griddle to 400 degrees or medium heat.
Combine the flour, baking powder, baking soda, salt and cinnamon in a large mixing bowl.
In a medium bowl or 4-6 cup measuring cup, whisk together the buttermilk, eggs, vanilla, maple syrup and melted butter until well blended. (A blender can do this easily, too.)
Pour the wet mixture into the dry ingredients and stir until just combined.
Grease the griddle with a little coconut oil.
Dip the apple slices one at a time in the batter and turn to coat. I like to use a toothpick or a wooden skewer to do this.
Cook dipped apple slices like you would regular pancakes, flipping once the bottoms are golden and the edges are dry. Cook until the second side is golden brown and the pancake is cooked through.