01 -
Preheat oven to 175°C. Grease two 20 cm round cake pans with butter and line the bases with parchment paper.
02 -
In a medium bowl, whisk together flour, cocoa powder, baking powder, baking soda, and salt until fully blended.
03 -
In a medium saucepan over medium-high heat, combine water and sugar and bring to a boil. Stir until the sugar dissolves, about 1 minute. Remove from heat and add chopped chocolate and butter, stirring until fully melted.
04 -
Whisk vegetable oil and vanilla extract into the chocolate mixture. Quickly beat in eggs until just combined, ensuring the mixture is not too hot to avoid cooking the eggs.
05 -
Gradually whisk in the dry flour mixture until batter is smooth and no lumps remain.
06 -
Divide batter evenly between prepared pans. Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.
07 -
Allow cakes to cool in their pans until cool to the touch before turning out onto wire racks for frosting.
08 -
In a stand mixer, beat softened butter until creamy. Add vanilla extract, peppermint extract, and salt. Gradually mix in powdered sugar, one cup at a time, beating well on medium speed after each addition. Scrape the sides and bottom of the bowl as needed. Continue beating on medium until light and fluffy.
09 -
Spread a generous layer of frosting between the cooled cake layers. Frost the top and sides of the cake as desired. Garnish with crushed candy canes if using.