Maple Blueberry Cupcakes

• Cupcakes:
• 1/2 cup granulated sugar 
• 5 tablespoons butter or stick margarine, softened 
• 1 teaspoon vanilla extract
• 1/2 teaspoon imitation maple flavoring
• 2 large eggs 
• 1 1/4 cups all-purpose flour
• 1 1/4 teaspoons baking powder
• 1/4 teaspoon salt
• 1/4 cup 1% low-fat milk 
• 1/4 cup maple syrup
• 1 cup blueberries 
• 
  
• maple buttercream frosting :
• 
  • 3 tablespoons maple syrup
  • 2 tablespoons butter or stick margarine, softened 
  • 1/2 teaspoon vanilla extract
  • 1/2 teaspoon imitation maple flavoring
  • 1/8 teaspoon salt
  • 1 3/4 cups powdered sugar
  •