Put all the crepe ingredients in a blender, blend until combined. Put the batter in the fridge for one hour and up to 12 (can be made the night before).
To make the apples melt the butter in a pan over medium heat. Add the apples, brown sugar, salt and cinnamon. Cook until the apples have softened. Add the beer and simmer until the liquid has thickened to a syrup, set aside.
In a 10 inch non-stick skillet melt 1 tablespoon butter.
Add about ¼ cup batter, swirl the pan to spread the batter into a thin circle.
Cook over medium high heat until the top is dry. Flip the crepe using a spatula, cook until the underside is golden brown. Continue until all batter is used.
Fill the crepes with apples, serve warm.