Step 1In a small bowl, stir the espresso powder into the heavy cream until dissolved.
Step 2In the bowl of a stand mixer, or in a large bowl, add the espresso mixture to the Nutella, then add the Kahlua. Mix with a whisk for 1 minute and scrape down the sides of the bowl. Continue beating until softly whipped. Spoon into a serving bowl or glasses and refrigerate for 2 hours.
Step 3Before serving, garnish with whipped cream and toasted nuts or peanut brittle.