Chocolate Crepe Cake

Name: Chocolate Crepe Cake
Ingredients: 2 cups heavy cream; 2 cups powdered sugar; 1/2 cup cocoa powder; 2 1/4 cups superfine blanched almond flour; 1/2 cup plus 2 TBSP sweet rice flour; 2 1/4 cups whole milk; 6 large eggs; 5 soft California Prunes (roughly chopped); 2 1/2 TBSP sugar; 2 TBSP cocoa powder; 2 TBSP salted butter (melted and cooled, plus more for pan); 1 1/2 tsp pure vanilla extract; 3/4 tsp coarse kosher salt; Optional garnishes: toasted slivered almonds (chopped dark chocolate, cocoa powder)