
1⅓ cup (18 squares) chocolate graham cracker crumbs
6 tablespoons butter, melted
3 8-ounce packages cream cheese, softened
¾ cup granulated sugar
1 teaspoon vanilla extract
3 eggs
½ cup milk chocolate chips
¾ cup semisweet chocolate chips, divided
3 tablespoons unsweetened cocoa powder
2 teaspoons milk
½ cup white chocolate chips
1 teaspoon shortening, divided