For the crumble
4 graham crackers roughly crumbled
4 tbsp unsalted butter 42g, melted
1/2 tsp cinnamon 1g
1 pinch salt
1/4 tsp all spice 250mg
For the Buttercream
1 1/2 cups unsalted butter 340g, room temp
1 1/2 pounds powdered sugar 680g
1 tsp salt
1 cup dark or semisweet chocolate 175g, melted and cooled
For the Fluff
1 cup sugar 200g
1/2 cup light corn syrup 118mL
4 large egg whites room temp
1/4 tsp salt
For the Chocolate Drizzle
3/4 cup dark chocolate melted and cooled