To make this recipe dairy-free and vegan: Make sure your gluten-free ice cream cones are also dairy-free. Use dairy-free ice cream, melted dairy-free buttery sticks in place of the butter, and 3 cups whipped dairy-free topping instead of making whipped cream.
Preheat the oven to 350ºF. Spray a 9-inch pie dish with cooking spray.
Combine the sugar cone crumbs with the brown sugar and melted butter. Pour the mixture into the prepared pie pan and press firmly into the pan, covering the bottom and up the sides. Bake for 6 minutes. Let cool completely.
Let the ice cream sit at room temperature for 10-15 minutes or until softened.
Whip the cream with the powdered sugar and vanilla until stiff peaks form.
Spread the softened ice cream into the cooled pie crust. Top with the whipped cream and sprinkles. Freeze for at least 1 hour. Let sit at room temperature for 10-15 minutes before slicing and serving.