Mocha Toffee Cheesecake

2-1/2 crushed  chocolate graham crackers, crushed
1/2 cup butter, melted
1 teaspoon instant coffee granules
2 tablespoons sugar
FILLING:
1 cup (6 ounces) semisweet chocolate chips
1/4 cup heavy whipping cream
4 teaspoons instant coffee granules
3 packages (8 ounces each) cream cheese, softened
1-1/3 cups sugar
1-1/2 cups (12 ounces) sour cream
1 tablespoon vanilla extract
1/8 teaspoon salt
3 eggs, lightly beaten
1 package toffee bits (10 oz)
1/2 cup finely chopped pecans
1 7 oz  dark chocolate pieces
Directions
Place a greased 9-in. springform pan on a double thickness of heavy-duty foil (about 18 in. square). Securely wrap foil around pan. In a small bowl, combine crushed graham cracker crumbs, instant coffee, butter and sugar. Press onto the bottom and 1 in. up the sides of prepared pan. Place pan on a baking sheet. Bake at 350° for 10 minutes. Cool on a wire rack.
In a microwave-safe bowl, melt chips and cream; stir until smooth. Stir in coffee granules until dissolved. Set aside. In a large bowl, beat cream cheese and sugar until smooth. Beat in the sour cream, vanilla and salt; gradually beat in chocolate mixture. Add eggs; beat on low speed just until combined. Pour into crust. Place springform pan in a large baking pan; add 1-1/2 in. of hot water to larger pan.
Bake at 350° for 55-65 minutes or until center is just set and top appears dull. Remove springform pan from water bath. Cool on a wire rack for 10 minutes. Sprinkle with toffe bits,and chopped pecans.
Carefully run a knife around edge of pan to loosen; cool 1 hour longer. Refrigerate overnight. Chop the  chocolate ; melt in a microwave and stir until smooth. Drizzle over top of cheesecake. Yield: 12 servings.