Pistachio Pound Cake With Drippy Icing

Ingredients

• vegetable-oil cooking spray
• 3 cups all-purpose flour, plus more for dusting
• 1 1/4 cups (2 1/2 sticks) unsalted butter, room temperature
• 3/4 cup (6 ounces) cream cheese, room temperature
• 1 cup salted shelled pistachios, ground to a paste in a food processor
• 3 cups sugar
• 6 large eggs, room temperature
• 2 teaspoons pure vanilla extract
• 1 tablespoon coarse salt
• 3/4 cup coarsely chopped salted pistachios
• drippy icing
• 1 1/2 cups unsalted pistachio slivers