lemon-blueberry muffins

Ingredients For lemon-blueberry muffins

• 1/2 c

  butter, softened
• 1 c

  sugar
• 2

  eggs
• 1/2 c

  milk
• 2 tsp

  lemon zest, grated
• 2 c

  all purpose flour
• 2 tsp

  baking powder
• dash

  salt
• 2 c

  fresh or frozen blueberries (i've only used fresh).
• GLAZE:
• 1 1/2 c

  confectioners' sugar
• 2 Tbsp

  fresh lemon juice
• 1 tsp

  butter, melted
• 1/4 tsp

  vanilla