Hazelnut Praline Ferrero Chocolate Layer Cake Step-by-step instructions

Before you start

Before starting, make sure the chocolate sponge layers are at room temperature. If they are homemade, trim the tops to make them level. Chill the golden hazelnut truffles in the refrigerator so they are firm and easy to halve.

Coarsely chop the roasted hazelnuts and grate the dark chocolate into curls. Prepare the hazelnut mousse and wafer praline according to your recipes or package instructions. Have all ingredients and equipment ready before assembly.

Instructions

Assemble and Chill

1. 1Prepare the toppings
   Coarsely chop the roasted hazelnuts with a chef's knife on a cutting board, keeping some pieces larger for texture. Grate the dark hazelnut chocolate on the large holes of a box grater, creating a pile of glossy chocolate curls. Set both aside. Halve the golden hazelnut truffles and keep them in the refrigerator until needed.
   Look for The hazelnuts are in uneven chunks; the chocolate curls are light and airy.
   Tip Chill the chocolate block for 10 minutes before grating for cleaner curls.
2. 2Assemble the first layer
   Place one chocolate sponge layer on the serving plate. Spread half of the creamy hazelnut mousse evenly over the top with an offset spatula. Sprinkle half of the crunchy wafer praline over the mousse, pressing lightly so it adheres. Scatter a handful of the chopped hazelnuts over the praline for extra crunch.
   Look for The mousse is smooth and even; the praline and nuts form a crunchy layer.
   Tip Use a turntable for easy, even spreading.
3. 3Add the second layer
   Carefully place the second chocolate sponge layer on top, aligning it with the first. Press down gently to set it in place. Spread the remaining hazelnut mousse over the top and sides of the cake, creating a smooth, even crumb coat. Refrigerate the cake for 30 minutes to firm up the mousse.
   Look for The cake is evenly covered with mousse; crumbs are sealed.
   Tip Chill the cake before adding the glaze to prevent it from sliding.

At the end of this phase, the cake should be fully assembled with a crumb coat of mousse, and it should be firm to the touch. The sponge layers are aligned, and the mousse is smooth.

The chopped hazelnuts and chocolate curls are ready for the next step. Check that the cake is level and that no sponge is exposed.

Glaze and Decorate

4. 4Pour the glaze
   Warm the mirror glossy dark chocolate hazelnut glaze until it is pourable but not hot. Pour the glaze over the center of the cake, letting it flow down the sides. Use an offset spatula to gently spread it to the edges, covering the top and letting it drip naturally. Sprinkle the remaining chopped hazelnuts over the top while the glaze is still wet.
   Look for The glaze is shiny and smooth, with nuts sticking to it.
   Tip Pour the glaze in one steady stream for an even finish.
5. 5Decorate the top
   Arrange the halved golden hazelnut truffles around the top edge of the cake, cut side down. Drizzle the praline sauce over the top in a zigzag pattern, letting it fall down the sides. Allow the cake to set in the refrigerator for at least 30 minutes so the glaze firms up.
   Look for The truffles are evenly spaced; the praline drizzle is artistic.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Use a piping bag or a spoon for the drizzle.

The glaze should cover the top and sides evenly, with a glossy finish. The chopped hazelnuts are sprinkled on top, and the truffles are arranged around the edge. The praline drizzle adds a decorative touch. The cake should look polished and ready to set.

Slice and Serve

6. 6Slice and serve
   Remove the cake from the refrigerator 15 minutes before serving. Using a sharp knife, slice a thick triangular wedge. Lift the slice with a metal cake server, supporting the bottom to keep the layers intact. Place on a dessert plate and serve immediately.
   Look for The slice is tall and clean; layers are visible.
   Tip Warm the knife in hot water and wipe dry for clean slices.

The cake is chilled and the glaze is set. Slicing produces a clean triangular wedge with visible layers of sponge, mousse, praline, and glaze. The truffles and praline drizzle remain intact. The slice holds its shape on the cake server, ready to be served.

Common mistakes

One common mistake is pouring the glaze too early, causing it to run off the cake. Make sure the cake is well-chilled and the glaze is not too warm. Another issue is spreading the mousse too thick, making the cake unstable.

Keep the mousse layer even and not overly generous. When slicing, use a sharp knife and wipe it between cuts to avoid dragging the glaze. Finally, don't skip the chilling steps—they are essential for a clean finish.

How to tell it’s done

The cake is done when the glaze is set but still shiny, and the truffles are firm. To check the glaze, gently touch the surface—it should be dry to the touch but not hard.

The cake should be thoroughly chilled so that slicing yields clean layers. If the mousse or glaze starts to soften, return the cake to the refrigerator for a few minutes. The cake is best served slightly chilled, allowing the flavors to meld.

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