Preheat oven to 350, grease loaf pan (or muffin tray).

Mix flour, sugar, salt, and baking powder in a large bowl.

Stir milk, oil, egg, and vanilla extract into dry mixture. Coat bluberries lightly in flour and mix into batter. Pour into pan.

Bake until toothpick comes out clean. ~60 minutes (less for muffins)

For glaze: mix confectioner's sugar and lemon juice, pour over top.