Your baking instructions are included on the back of the box, but we've gathered them here as well—just in case your box has already made its way to the recycling bin.

TO MAKE A CAKE:

• Heat oven to 160°C (325°F). Lightly grease pan, then line with parchment.
  
• In large heatproof bowl, stir together boiling water and Dark Chocolate (1) until smooth.
• Add room temperature water, oil, and egg. Whisk until smooth. Add Cake Mix (2) and whisk until just combined. Pour into pan.
• Bake as directed in chart, or until toothpick inserted in centre comes out with a few moist crumbs. Cool 15 minutes, then remove cake from pan and peel away parchment. Let cool completely before topping.

TO MAKE A GLAZE:

• When cake has cooled, in small pot or microwave-safe bowl, melt butter.
• Whisk in 1 tbsp hot water and Topping Mix (3). Don't worry if the mixture splits at first.
• Add more hot water, 1/2 tsp at a time, whisking until smooth and pourable.

TO FINISH:

• Place cooled cake on serving platter. Top with glaze and spread toward edges, letting gravity do the rest.
• Just before serving, sprinkle with Flaky Sea Salt (4).