Preheat oven to 375°F. Grease a 9-inch springform pan.
Make crust: In a medium bowl, combine graham crackers crumbs, pecans and melted butter. Press crumb mixture into the bottom of prepared pan.
Make filling: In a large bowl, beat cream cheese, sugar, flour and vanilla with an electric mixer until combined (don't over mix). Add eggs and yolk, beating on low until combined. Stir in 1/4 cup milk. Pour filling onto prepared crust.
Bake for 35 to 40 minutes or until centre appears nearly set.
Cool on wire rack for 20 minutes. Loosen the crust from sides of pan and cool completely.
In a small saucepan over low heat, combine MACKINTOSH Toffee Pieces, remaining milk and 4 tsp water. Cook stirring, until melted, about 5 minutes. Pour melted caramel on top of cheesecake and top with TURTLES. Cover and chill overnight before serving.
Garnish with fresh fruit
Garnish with fresh fruit, if desired.