In a mixing bowl, combine the sourdough starter, eggs, milk, and salt. Add in the melted butter and whisk the ingredients together until you have a smooth batter.
Preheat your skillet or crepe pan over medium heat. Add a small amount of butter or oil (coconut oil or rendered beef tallow) and let it melt, coating the pan evenly.
Pour a ladleful (about a half a cup of batter) of the sourdough crepe batter into the center of the hot pan. Quickly lift and tilt the pan to spread the batter thinly across the bottom.
Cook the crepe for about 2-3 minutes until the edges start to lift and the bottom turns golden brown they will be almost completely cooked through.
Carefully flip the crepe using a spatula and cook for an additional 1-2 minutes on the second side until it's lightly browned. Transfer the cooked crepe to a plate and keep it warm. Continue the process with the remaining batter, adding a bit more butter or oil to the pan as needed.
Make your filling; Mix together room temperature cream cheese or chèvre with maple syrup and vanilla until smooth. Whip heavy cream until stiff peaks form, then fold in with the cheese mixture
Add to the inside of your sourdough crepes and enjoy!