In a mixing bowl, pour in 1 cup of heavy cream and 2 tablespoons of powdered sugar. Using an electric mixer, beat the mixture on medium-high speed for about 2-3 minutes, or until stiff peaks form.

Grab a shaker and add 2 ounces of Irish cream and 1 ounce of hazelnut liqueur over a generous scoop of ice. Secure the lid tightly and shake vigorously for about 15-20 seconds.

Carefully strain the mixed cocktail into a chilled highball or cocktail glass, holding back the ice with the shaker’s strainer.

Using a spoon, gently dollop or pipe your fluffy homemade whipped cream on top of the strained cocktail.

Sprinkle a tablespoon of crushed hazelnuts or graham cracker crumbs generously over the whipped cream.

Present your Nutty Irishman cocktail right away, ideally garnished with a whole hazelnut or a flourish of additional whipped cream.