The day before making and assembling the cake, make the Crepe Batter and the Pastry Creme Filling (see recipes below); refrigerate overnight.
Remove the prepared Crepe Batter from the refrigerator and bring to room temperature:
Line baking sheets with parchment paper.
Using a nonstick or lightly-oiled crepe pan over medium-low heat.
Evenly distribute approximately 3 tablespoons Crepe Batter; swirl to cover the surface of the pan. Cook approximately 1 minute or just until the bottom of the crepe becomes lightly browned.
Using your clean fingers, gently and carefully turn the crepe over and continue cooking the other side of the crepe for no longer than 5 seconds. Remove the cooked crepe onto a prepared baking sheet (do not stack the crepes on top of each other).
Repeat this process until you have 20 perfect crepes. NOTE: You might need to prepare a few practice crepes in the beginning.
Remove the prepared Pastry Creme Filling from the refrigerator:
Whip the 2 cups of heavy cream with the 1 tablespoon sugar. Gently fold the whipped cream into the prepared chilled and thickened Pastry Creme Filling.
Assembly of 20-Layer Crepe Cake:
Place one (1) prepared crepe on a large cake plate.
With a small spatula or wide blade knife, completely cover the crepe with a thin layer of the pastry cream mixture (approximately 1/4 cup).
Cover with another dry crepe and repeat covering with the Pastry Creme until you have reached 20 layers.
The 20th crepe will be the last or top layer.
Refrigerate the prepared cake for a minimum of 2 hours to let the pastry cream become firm. Allow to stand at room temperature for 15 to 30 minutes before serving. Dust with powdered (confectioners' sugar).
When ready to serve, slice into individual servings. Garnish the plate with fresh berries.
Makes one (1) 20-Layer Cake.
In a small pan, melt the butter until lightly browned; remove from heat and set aside.
In a separate, small pan, warm the milk until steaming; remove from heat and set aside to allow to cool slightly.
In a large bowl using your electric mixer at a low speed, mix together the eggs, flour, sugar, and salt. Slowly add in the warm milk and browned butter. Pour the batter into a tightly-sealed container to refrigerate for several hours or overnight.
In a small bowl, add egg, flour, sugar, and cornstarch; beat until smooth.
In a saucepan over low heat, bring milk almost to a boil (simmer). Immediately remove from heat and slowly whisk the milk into the egg mixture. Return all ingredients to the saucepan, while constantly stirring, for about 5 minutes, until thickened and just comes to a boil.
Remove from the heat. Add vanilla extract and hot water; stir until dissolved into the mixture. Set aside to cool until firm.
When the Pastry Creme has cooled, fold in the whipped cream.
Refrigerate mixture until thick (best if refrigerated overnight).
20-layer Crepe Cake Recipe: https://whatscookingamerica.net/EllenEaston/20-LayerCrepeCake.htm