Tiramisu Panna Cotta

Ingredients

For 12 servings

• •2 envelopes unflavored powdered gelatin (about 1 Tbsp. plus 2 tsp.)
• •1.666666666666667 tasse whole milk
• •2 c. à soupe instant espresso powder
• •1 c. à soupe vanilla extract
• •0.75 tasse plus 2 Tbsp. plus 1 tsp. (179 g) sugar, divided
• •2 c. à soupe Dutch-process cocoa powder, plus more for dusting
• •1 c. à café Diamond Crystal or ½ tsp. Morton kosher salt, plus more
• •8 oz mascarpone
• •4 tasse heavy cream, divided
• •3 c. à soupe dark rum
• •Chopped chocolate-covered coffee beans (for topping; optional)

Method

1. 1.Mix 2 envelopes unflavored powdered gelatin (about 1 Tbsp. plus 2 tsp.) and 2 Tbsp. cold water in a large bowl; let sit 5 minutes to soften.
2. 2.Meanwhile, whisk 1⅔ cups whole milk, 2 Tbsp. instant espresso powder, 1 Tbsp. vanilla extract, ¾ cup plus 2 Tbsp. (175 g) sugar, 2 Tbsp. Dutch-process cocoa powder, and 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt in a small saucepan to combine, then place over medium-high heat and bring to a very gentle simmer (a few bubbles are all you need), whisking occasionally. Immediately pour half of hot milk mixture over gelatin; stir to melt gelatin. Add 8 oz. mascarpone to remaining milk mixture in pan and stir to combine. Pour over gelatin mixture and whisk until smooth. Add 2⅔ cups heavy cream and whisk to combine. Let cool, then whisk in 3 Tbsp. dark rum. Strain mixture through a fine-mesh sieve into a 13x9" baking dish, cover with plastic wrap, and chill until set, at least 6 hours and up to 12 hours.
3. 3.When ready to serve, whisk a pinch of kosher salt and remaining 1⅓ cups heavy cream and 1 tsp. (4 g) sugar in a large bowl until soft peaks form. Dollop whipped cream over panna cotta and spread, swooshing decoratively as desired. Dust with cocoa powder; top with chopped chocolate-covered coffee beans if using.