Whisk together flour, salt, eggs, maple syrup, milk, and melted butter until smooth. Heat 8″ skillet over medium-low heat and lightly grease with oil. Place a scant ¼ cup of batter in pan. Tilt the pan so that the batter covers the entire pan and cook for about 30-45 seconds. Flip and cook for another 15 seconds. Layer done crepes, slightly overlapping, on a plate. If batter thickens, add a bit of extra milk to thin it back to pourable consistency.
Combine diced peaches, red onion, walnuts, parsley, and olive oil in a bowl. Crumble blue cheese into the bowl and stir until ingredients are well combine.
Fill crepes with half the mixture and spoon remaining half on top before serving. Drizzle with honey and finish with a sprinkle of parsley