Preheat oven to 350 F. Generously spray a bundt cake pan (springform pan) with non stick cooking spray.
Prepare crumb topping by mixing all ingredients with a rubber spatula and set a side.
In a bowl whisk together flour, baking soda, baking powder and salt and set a side.
Beat eggs and sugar, than add vanilla, milk and oil. Mix in lemon zest.
Add flour mixture, mix until combined.
Add blueberries and gently fold them with a rubber spatula.
Evenly spread batter into the pan. Sprinkle crumb topping.
Bake at 350 F for 50 minutes, or until toothpick inserted into the center comes out clean.
Remove from oven and place on a cooling rack for 15 minutes. If necessary run knife around the edges and remove from form.
Sprinkle with powder sugar, cut and serve.