Add the melted butter, sugar and treacle to a small pot and place over a medium high heat until the butter has melted and sugar has dissolved.
In a large mixing bowl combine the flour with the baking powder and spices. Create a well in the centre and pour in the buttermilk, butter/sugar mixture, eggs and vanilla bean paste. Whisk together until a smooth batter forms.
Brush a large nonstick frying pan with melted butter and place over a medium heat. Add roughly a tablespoon of the batter per pancake across the pan, leaving space for the batter to expand as it cooks. Cook for 2-3 minutes on either side.
Keep warm in a low oven before serving with maple syrup and dollops of creme fraiche.