Spinach and ricotta crespelle

Name: Spinach and ricotta crespelle
Prep time: 40 min
Cook time: 30 min
Total time: 1 h 10 min
Yield: 4 servings
Ingredients: 1 pinch of Black pepper; 1 pinch of Fine sea salt; 350 gr of Frozen spinach; 1 pinch of Ground nutmeg; 4 Medium egg; 40 gr of Parmigiano cheese; 325 gr of Plain flour; 250 gr of Ricotta cheese; 1 ¼ L of Semi skimmed milk; 115 gr of Unsalted butter