Preheat oven to 350, and prep a 9x9 pan
Using an electric mixer add sugars and butter. Beat until light & fluffy about 5 mins.
Add eggs one at a time, until fully incorporated. Mix in lemon juice, Greek yogurt, and vanilla extract.
In a different bowl, whisk together dry ingredients.
Add flour mixture when mixer is on slow until fully incorporated.
Gently fold in frozen berries.
Pour batter into cake pan and top with the crumble mixture until equally covered.
Bake for 45 mins until a tooth pick comes out clean.
Let cool & Enjoy. If storing in the fridge, take out and left come to room temp before eating.