Sauce, recipe follows, for serving
Mint Syrup, recipe follows, for serving
To make the cake: Preheat oven to 350 degrees F.
Butter a 9 1/2 to 10-inch springform pan
, line the bottom with parchment paper, butter the paper, and flour the pan, tapping out the excess flour.
the chocolate with the butter and cream in the top of a double boiler
In the bowl of a mixer
with a whip, beat the egg yolks with the sugar until very thick and light (about 5 minutes). Add the melted chocolate mixture to the egg yolks and mix until just blended. Add the flour, salt, and vanilla and mix until combined, scraping the bowl once or twice. Transfer the batter to a large mixing bowl and stir in the Peppermint Pattie pieces. The mixture will be quite thick.
In a clean mixing bowl, with a clean whip, beat the egg whites to medium soft peaks. Lighten the batter
by stirring in about one-third of the egg whites. Fold in the remaining whites and the place batter in the prepared pan. Bake at 350 degrees F for approximately 45 to 50 minutes. The top of the cake will feel set and very fine hairline cracks will just start to form around the edges. Remove and cool in the pan on a rack.
To make the ganache topping: Heat the cream in a heavy bottomed saucepan to just under a boil. Add the chopped chocolate and, over very low heat, constantly stirring, cook the mixture until it is completely smooth. Strain through a fine sieve into a bowl and cool, stirring occasionally, until thickened and spreadable. This can take several hours. You can make the topping up to 3 days ahead, refrigerate it, and allow it to come to room temperature for several hours before using. You can also hasten the cooling process by placing the melted ganache over an ice bath and gently stirring it till thickened; however, the resulting texture may not be quite as smooth and creamy.
Place the cooled cake upside down on a cardboard cake circle or a service plate. Remove the sides and bottom of the springform pan. Remove the parchment liner. Using an offset spatula
, decoratively spread the ganache over what is now the top of the cake
, drawing the ganache
all the way out to the edges of the cake. Using the offset spatula, level the edges to give the cake a finished look. Serve at room temperature with whipped cream, Cocoa Fudge Sauce and Mint Syrup.