Toffee-topped Cheesecake Bars

Ingredients

• all-purpose flour
  1¼ cups
• powdered sugar
  1 cup
• Hershey's cocoa
  ½ cup
• baking soda
  ¼ tsp
• (1½ sticks) butter or margarine

  softened
  ¾ cup
• pkg (8 oz) cream cheese

  softened
  1 unit
• (14 oz) sweetened condensed milk (not evaporated milk)
  1 can
• eggs
  2 unit
• vanilla extract
  1 tsp
• (10-oz pkg) Skor English toffee bits

  divided
  1¾ cups