Preheat oven to 400 degrees F
Line muffin tin with muffin liners
Combine flour, sugar, salt and baking powder.
In a small bowl combine the vegetable oil, the egg and almond milk. Fold the wet mixture into the dry mixture. Once incorporated, fold in the blueberries.
Fill muffin cups right to the top, and sprinkle with streusel topping mixture.
To Make Streusel Topping: Mix together the streusel ingredients and sprinkle over muffins before baking.
Bake for 20 to 25 minutes until done.