Strawberry sauce adds a sweet, fruity layer to this rich, nutty sundae.
In a medium bowl, whip heavy cream and vanilla-bean seeds until soft peaks form.
Place 2 scoops pistachio ice cream in each of four dishes. Pour 1/4 cup strawberry sauce over each sundae, and top each with a dollop of whipped vanilla cream. Sprinkle with chopped pistachios, and serve.