Pre-heat the oven at 400F.
In a bowl, pour the flour, baking powder, the brown sugar and the cold butter.
Using a fork or a pastry cutter, bring the mixture to a crumble.
In a small bowl, whisk the 2 eggs. Add then to the crumbly mixture. Do not over work it.
In a rectangular oven dish, place some parchemin paper.
Take your dough and set 2 cups aside. Now, with your hands, push the dough evenly in the dish to form the base. Set aside.
Wash and remove the stem of your strawberry. Cut them in half and pour them in a bowl.
Pour the granulated sugar on your strawberries, the vanilla extract and the corn starn. Toss well.
Pour your coated strawberries onto your crust in the dish. Spread them evenly.
Take your 2 cups of crumble you have set aside and spread it on the strawberries.
Bake your strawberry crumble bar for 30 minutes at 400F.
Once baked, allow to cool completely before slicing, otherwise, it would fall apart.