Gather your ingredients and tools — a shaker, strainer, rimming dish, measuring jigger, and a zester.
Pour vanilla vodka, vanilla liqueur, and heavy cream into the shaker.
Secure the lid and shake vigorously for about 15 seconds until the mixture is well chilled and slightly frothy.
Pour some coarse sugar onto a small plate for rimming your glass.
Run a lemon wedge around the edge of your glass, then dip it into the sugar to coat the rim evenly.
Strain the cocktail mixture into the prepared glass, catching any ice shards for a smooth pour.
Sprinkle cookie crumbs or colorful sprinkles on top for garnish and extra texture.
If desired, grate a tiny bit of lemon zest over the top for a bright, fresh aroma.
Serve immediately and enjoy this creamy, sweet, and festive cocktail that feels like dessert in a glass!