For the muffins
- 2 cup flour
- ½ cup sugar
- 1 tablespoon baking powder
- ½ teaspoon salt
- 1 egg at room temperature
- 1 cup milk
- ¼ cup vegetable oil
- 1 cup fresh blueberries make sure the cup if rounded full
For the streusel
- ⅓ cup flour
- ½ cup sugar
- ¼ cup butter cubed
- ¼ teaspoon salt
powdered sugar for dusting