Prep Time 25 minutes mins
Cook Time 30 minutes mins
Resting Time 1 hour hr
Total Time 1 hour hr 55 minutes mins
For the best red color, use liquid gel food coloring and adjust to your preferred shade without overmixing the batter. Room-temperature dairy and eggs help the batter emulsify and rise evenly, while sifting powdered sugar keeps the frosting silky. Crush cookies in a zip-top bag with a rolling pin, reserving some larger chunks for topping and finer crumbs for frosting to avoid tearing the crumb coat. If you prefer deeper chocolate notes, add 1 extra tablespoon cocoa and 2 teaspoons more sugar. Store the cake covered in the fridge up to 4 days and serve slightly chilled for clean slices, letting it sit 10–15 minutes at room temperature before cutting.