Combine all of the dry ingredients in a bowl, salt, baking powder, flour, and sugar whisk to combine.
In a separate bowl add the, eggs, oil, milk, vanilla, mix to combine. Add the dry ingredients into the wet ingredients and stir to combine. Gently fold in the blueberries.
Line a 12 muffin tin with muffin liners.
Scoop the muffin mixture evenly into the muffin tin.
To make the streusel combine the streusel ingredients together and sprinkle on top of the muffin dough in the muffin tin. Bake for 30-40 minutes. Enjoy