Step 1: In a small skillet, melt 1 tablespoon of butter over medium heat. Add the diced apples and a pinch of cinnamon. Sauté for 4-5 minutes until slightly softened. Remove from heat and let cool slightly.
Step 2: In a large mixing bowl, whisk together the flour, sugar, baking powder, baking soda, salt, and 1 teaspoon of cinnamon.
Step 3: In a separate medium bowl, whisk the buttermilk, eggs, maple syrup, and melted butter until well combined.
Step 4: Pour the wet ingredients into the dry ingredients. Stir gently with a spatula until just combined; do not overmix. Fold in the sautéed apples.
Step 5: Heat a lightly greased griddle or large non-stick skillet over medium heat. Scoop about 1/4 cup of batter for each pancake onto the griddle.
Step 6: Cook until bubbles form on the surface and the edges look set (about 2-3 minutes). Flip carefully and cook the other side until golden brown (another 1-2 minutes).
Step 7: Serve warm with extra maple syrup and a dusting of cinnamon.