For Crust:
1 1/2 cup chocolate wafer cookie crumbs (about 8 ounces or 35 cookies)
5 tablespoons unsalted butter, melted

For Filling:
1/2 cup (1 stick) unsalted butter, cut into cubes
8 ounces good quality dark chocolate, roughly chopped
1 2/3 cups sugar
2 tsp vanilla extract
1/2 tsp salt
4 eggs
1/2 cup creamy salted peanut butter