Combine together flour, baking powder, sugar, cinnamon and salt in a large-sized bowl. Make a well in the centre and add the melted butter, egg, vanilla and milk. Slowly whisk well until smooth. Set aside.
Melt a small amount of butter in a nonstick pan over low-medium heat. Pour less than 1/4 cup of batter onto the pan and spread out gently with the back of your ladle. Drop chocolate chips/buttons onto the centre of the batter, and then gently pour a little pancake batter evenly over the top to cover completely.
When the underside is golden, gently flip and cook until golden. Repeat with remaining batter and chocolate chips. (Please note: no bubbles will form on top like normal pancakes, so check the corners before flipping).
Prepare a wide shallow dish with the cinnamon and sugar. Immediately place each pancake onto the cinnamon sugar while they're still warm. Evenly coat both sides and place onto a serving dish.
Serve with fruit, ice cream or frozen yoghurt, or enjoy as they are.
Notes
Tip: Serve with whipped cream and a side of strawberries for an extra decadent brunch dish.