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Desserts · Part 2 of 3: Instructions

Decadent Twenty-Layer Hazelnut Chocolate Crepe Cake Step-by-step instructions

A towering twenty-layer chocolate crepe cake with visible hazelnut cream layers and a glossy dark chocolate ganache glaze.
Prep
Cook
Total
Serves
12
Includes 1 h resting

Before you start

Before beginning, ensure all ingredients are at the appropriate temperatures; the pastry cream should be at room temperature, while the heavy cream must be cold from the refrigerator. Have your crepe pan, a whisk, and an offset spatula ready on your counter.

Clear enough space in your refrigerator for the finished cake to rest, as this chilling period is essential for setting the layers before the final slice. Prepare a flat, stable surface for stacking the crepes, and keep a clean damp cloth nearby for wiping the edges of the plate during assembly.

Ingredients at a glance (4)
  • 2 cups cocoa crepe batter, prepared and rested
  • 2 cups hazelnut praline pastry cream
  • 1 cup heavy cream, whipped to stiff peaks
  • 3/4 cup dark chocolate ganache, warmed

Instructions

Cooking the Crepes

  1. Prepare the Crepes
    Heat a crepe pan over medium heat to 360°F (182°C). Pour a thin layer of the cocoa crepe batter into the pan, swirling to cover the bottom evenly. Cook for 45 seconds until the edges are set and dry. Carefully flip and cook briefly. Repeat until twenty crepes are finished, allowing them to cool completely on a wire rack to prevent sticking.
    Look for The crepes should be paper-thin and dry to the touch.
    Safe temperature 160°F (71°C) internal temperature (egg dishes)
    Tip Keep the heat consistent to ensure every crepe cooks in exactly 45 seconds.

The crepes should be thin, golden-brown, and flexible. When touched, they should feel dry rather than sticky. If the edges begin to curl, the pan might be too hot; adjust the heat accordingly. Ensure all twenty crepes are uniform in size and thickness before proceeding to the filling stage, as consistency is key to a stable, level cake stack.

Preparing the Filling

  1. Prepare the Filling
    In a large chilled mixing bowl, whip the heavy cream until it reaches stiff peaks. Gently fold the whipped cream into the hazelnut praline pastry cream until fully incorporated and smooth. The resulting diplomatic cream should be airy and light, providing the structure needed for the cake layers to stay firm once stacked.
    Look for The cream mixture should hold its shape when lifted with a spatula.
    Tip Ensure the pastry cream is at room temperature before folding in the whipped cream.

The diplomatic cream should be light, airy, and hold stiff peaks when the whisk is lifted. It should look smooth with a consistent hazelnut color throughout. The texture should be thick enough to spread easily without running off the edges of the crepes. It should taste balanced, with the rich nutty flavor of the hazelnut paste shining through.

Assembling and Glazing

  1. Assemble and Glaze
    Place one cocoa crepe on a serving plate. Spread a thin, even layer of the hazelnut diplomatic cream over the surface. Repeat this process, stacking all twenty crepes. Once the stack is complete, pour the warm dark chocolate ganache over the top, letting it drip slightly down the sides. Chill for at least one hour before slicing to ensure clean, sharp layers.
    Look for The ganache should be glossy and smooth after pouring.
    Tip Use an offset spatula to ensure the cream layer remains consistent in thickness.

The finished cake should be perfectly circular with even, alternating layers of crepe and cream. The ganache should be glossy, smooth, and cover the top completely, with a thin coating dripping slightly down the sides.

The entire assembly should feel solid and stable before being placed into the refrigerator for the final set, ensuring clean and beautiful slices.

Common mistakes

A common mistake is cooking the crepes on heat that is too high, which causes them to brown unevenly or crisp up rather than remaining pliable. If the crepes are too thick, the final cake will be difficult to chew.

Another error is failing to let the crepes cool completely before stacking; adding warm crepes to the cream will cause the filling to melt and the cake to collapse. Finally, do not rush the chilling step; without adequate time in the refrigerator, the cake will lose its stability and the layers will slide when you attempt to slice them.

How to tell it’s done

The cake is considered done when the ganache has set firmly on the top of the stack and the layers have chilled sufficiently to hold their structure. A correctly assembled cake will feel firm to the touch but remain soft when sliced.

Because this recipe uses eggs in the pastry cream, ensure the custard base has been cooked to 160°F (71°C) during its initial preparation to guarantee food safety. When slicing, use a warm, sharp knife to glide through all twenty layers at once, revealing the distinct, beautiful pattern of the crepe and cream strata.

  • Egg dishes: 160°F (71°C) in the thickest part

Coming up in Part 3: common questions

  • Can this cake be made ahead of time?
  • Why is the crepe cake sliding apart?
  • Can the number of layers be changed?

Also in Part 3: variations (Classic Vanilla Bean, Espresso Mocha), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)