Grease an 8x8 baking dish and set aside.

Preheat oven to 375 degrees.

In a large mixing bowl, combine the flour, baking powder, dash of salt, and 1/4 cup raw sugar. Mix well to combine.

In a small bowl, add the milk, egg, vanilla extract and 1/3 cup avocado oil, Beat well to combine.

Pour the wet ingredients into the dry ingredients and gently stir to combine until no flour streaks remain.

Pour the batter into the prepared baking dish and gently smooth out the batter to cover the bottom of the dish.

In a small bowl, toss the blueberries in the lemon juice then scatter them over the batter.

In a small bowl, combine all streusel ingredients and stir well to combine. Work your your fingers through the streusel in a snapping motion to create crumbles.

Scatter the streusel topping over the blueberries.

But the baking dish on a cookie sheet and then into oven. Bake for 30-40 minutes until streusel is cooked and a toothpick comes out clean.

Let the cake cool before serving.