Great Wall of Chocolate Cake Recipe

Great Wall of Chocolate cake is P.F. Chang’s most famous dessert for a reason. Six layers of dense, fudge-forward chocolate cake stacked with thick bittersweet ganache frosting, the entire outside coated in chocolate chips. This copycat version gets close to the original with one ingredient most recipes miss: seedless raspberry jam whisked into the ganache, adding a subtle tartness that keeps 18 ounces of chocolate from tasting flat. The cake itself uses melted unsweetened chocolate in the batter for a brownie-like density that holds up under all that frosting.

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What Makes the Great Wall of Chocolate Cake Different

Six Layers of Dense, Fudgy Cake

The Great Wall of Chocolate at P.F. Chang’s is not a light, fluffy celebration cake. It is a towering slab of dense, fudge-forward chocolate with six distinct layers separated by thick ganache frosting. The cake layers themselves contain melted unsweetened chocolate mixed directly into the batter, which produces a richer, darker crumb than cocoa powder alone. Consequently, every layer has a texture closer to a brownie than a traditional cake, which is exactly the point. The density is what allows the cake to support the weight of all that ganache without collapsing.

To get six layers from two 9-inch round pans, you bake two thick cakes and slice each horizontally into three even layers. A long serrated knife and a steady hand are all you need. The thinner layers absorb more ganache per bite, which is why the restaurant version tastes so intensely chocolatey from edge to center. If six layers feels ambitious, four layers still delivers the effect. The visual drama and the chocolate-to-ganache ratio are what define this dessert.

The Raspberry Jam Secret

The ganache frosting contains 1/3 cup of seedless raspberry jam, and this is the ingredient most copycat recipes leave out. The jam does not make the cake taste like raspberry. What it does is add a subtle tartness and fruity depth that prevents the chocolate from becoming one-dimensional. Without it, the ganache tastes like pure chocolate and butter, which is rich but eventually monotonous over six layers. The jam brightens the frosting just enough to keep your palate interested through every bite. Furthermore, the acidity in the raspberry cuts the sweetness, so the cake tastes decadent without being cloying.

Chocolate Quality Is the Variable That Matters Most

Unsweetened for the Cake, Bittersweet for the Ganache

This recipe uses two types of chocolate for two different purposes. The cake batter calls for 5 ounces of unsweetened chocolate (100% cacao, no sugar). Unsweetened chocolate delivers maximum cocoa flavor without adding sweetness. The sugar in the batter provides all the sweetness the cake needs. If you substitute semisweet chocolate in the batter, the cake will be sweeter but less intensely chocolatey.

The ganache uses 18 ounces of bittersweet chocolate (60% to 70% cacao). Bittersweet has enough sugar to create a smooth, spreadable frosting without additional sweeteners, but enough cocoa to keep the flavor deep and complex. Specifically, look for chocolate bars or chips labeled 60% to 70% cacao. Anything higher than 72% can produce a ganache that tastes slightly bitter and sets too firm. Anything lower than 55% tastes more like milk chocolate and loses the intensity this cake requires.

Why Grocery Store Chips Will Not Cut It

Standard chocolate chips (Nestle Toll House, for example) contain stabilizers and less cocoa butter than bar chocolate. These additives help chips hold their shape during baking but prevent them from melting into a smooth ganache. The result is a grainy, thick frosting instead of a silky one. For the ganache, use chopped bar chocolate or high-quality baking chocolate. Ghirardelli, Guittard, Valrhona, and Callebaut all produce bittersweet chocolate that melts cleanly. Additionally, chop the chocolate finely before adding the hot cream. Smaller pieces melt faster and more evenly, reducing the risk of seized, lumpy ganache.

Building the Ganache Frosting

The Pour-and-Wait Method

Ganache is one of the simplest frostings to make, but timing is everything. Heat the heavy cream with the raspberry jam, butter, and salt until it just reaches a simmer. Do not boil. Boiling cream can break and separate. Pour the hot mixture over the chopped bittersweet chocolate in a large bowl and let it sit undisturbed for 60 seconds. The residual heat melts the chocolate gradually. Then whisk from the center outward in slow, steady circles until the ganache is completely smooth and glossy. Stir in the vanilla at the end.

The ganache needs time to thicken before you can frost the cake. You have two options: cover with plastic wrap and leave at room temperature overnight (best result, most even consistency), or refrigerate for 1 to 1.5 hours, checking every 20 minutes. The ganache should reach a thick, spreadable consistency similar to peanut butter. If it gets too firm in the fridge, let it sit at room temperature for 15 minutes and stir to loosen. Over-chilled ganache is difficult to spread without tearing the cake layers.

How Much Ganache You Actually Need

This recipe produces enough ganache to frost six layers generously and coat the entire outside of the cake. Spread about 3 to 4 tablespoons of ganache between each layer. Use the remainder for the sides and top. The sides get frosted first, then the top. This order prevents the top layer from sliding while you work on the sides. If you are pressing chocolate chips into the exterior, do it immediately after frosting while the ganache is still tacky. Once it sets, the chips will not stick.

Step-by-Step Instructions

Step 1: Bake the Cake Layers

Preheat oven to 350°F. Grease two 9-inch round cake pans, line the bottoms with parchment paper, and dust the sides with flour. Tap out the excess. Melt 5 ounces of unsweetened chocolate in a microwave-safe bowl in 30-second intervals, stirring between each, until completely smooth. Set aside to cool for 10 minutes.

In a medium bowl, whisk together the flour, baking powder, and salt. In a large bowl, beat the softened butter and sugar with an electric mixer until light and fluffy, about 3 minutes. Add the eggs one at a time, beating well after each addition. Mix in the vanilla extract. Pour in the cooled melted chocolate and beat until fully combined, scraping down the sides of the bowl.

Add the dry ingredients and milk in alternating thirds, starting and ending with the dry ingredients. Mix on low speed until just combined after each addition. Do not overmix. Divide the batter evenly between the two prepared pans and spread level. Bake for 25 to 30 minutes, until a toothpick inserted in the center comes out clean. Cool in pans for 10 minutes, then invert onto wire racks and cool completely.

Step 2: Make the Ganache

Place 18 ounces of finely chopped bittersweet chocolate in a large heatproof bowl. In a saucepan, combine the heavy cream, raspberry jam, butter, and salt. Heat over medium, stirring occasionally, until it just reaches a simmer. Do not boil. Pour the hot cream mixture over the chopped chocolate and let it sit undisturbed for 60 seconds.

Whisk slowly from the center outward until the ganache is completely smooth and glossy. Stir in the vanilla extract. Cover with plastic wrap pressed directly against the surface and let the ganache thicken. Ideal method: room temperature overnight. Quick method: refrigerate for 1 to 1.5 hours, checking every 20 minutes. The ganache should reach a thick, spreadable consistency.

Step 3: Slice into Layers

Using a long serrated knife, slice each cooled cake horizontally into 3 even layers. Place the knife against the side of the cake at the one-third mark, rotate the cake slowly, and cut through with a gentle sawing motion. A turntable makes this easier but is not required. For the most even cuts, insert toothpicks around the circumference at the cut line as guides. You should have 6 total layers.

If the layers are fragile, chill them in the refrigerator for 20 minutes before assembling. Cold layers are firmer and less likely to crack or absorb too much ganache during stacking.

Step 4: Assemble the Cake

Place the first cake layer on a serving plate or cake board. Spread 3 to 4 tablespoons of ganache evenly across the top. Add the next layer and repeat until all six layers are stacked. Apply a thin crumb coat of ganache around the sides and top to seal in crumbs. Refrigerate for 15 minutes to set the crumb coat. Then apply the final, thick layer of ganache to the sides first, then the top. Smooth with an offset spatula.

If using chocolate chips, press them into the sides of the cake immediately while the ganache is still tacky. Cup a handful of chips in your palm and press gently against the frosting, working your way around the entire cake. Scatter additional chips across the top if desired.

Step 5: Rest and Serve

Refrigerate the assembled cake for at least 2 hours, or overnight for the best results. The resting time allows the ganache to firm up, the layers to bond together, and the chocolate flavor to deepen. Pull the cake out of the refrigerator 20 minutes before serving so the ganache softens slightly and the texture becomes fudgy rather than firm. Slice with a sharp knife dipped in hot water and wiped clean between cuts for the cleanest edges.