amazing blueberry muffins, with cinnamon-sugar streusel topping

Ingredients For amazing blueberry muffins, with cinnamon-sugar streusel topping

• 1 1/2 c

  all purpose flour
• 3/4 c

  white sugar
• 1/2 tsp

  salt
• 2 tsp

  baking powder
• 1/3 c

  canola or vegetable oil
• 1 md

  egg
• 1/3 c

  milk
• 1 c

  fresh blueberries ( i use 2 cups of the maine wild blueberries)
• 2 tsp

  real vanilla extract
• topping
• 1/2 c

  white sugar
• 1/3 c

  all purpose flour
• 1/4 c

  butter cubed-- i use my cheese grater
• 1 1/2 tsp

  cinnamon