Preheat oven to 200 degrees.
In the bowl of your stand mixer or any bowl of choice mix together all dry ingredients.
In a separate bowl mix together all wet ingredients.
Add wet ingredients to dry ingredients and mix until well incorporated and dough forms.
Fold in blueberries using a spatula, do not mix using stand mixer or hand mixer so they don't break.
Mix the topping ingredients together (flour and brown sugar) and shred cold butter into the mixture.
Mix using your fingers and rub until a wet sand texture is formed. If too dry add more shredded cold butter until desired consistency is reached.
Line up a muffin tin with baking paper, i prefer silicon molds and spray the top so it doesn't stick when the muffins rise.
Fill in the mixture into each mold and top with the streusel crumble
Bake for 18 minutes or until a tooth pick comes out clear without drying out the berries.
