Crunchy Top Cake

Ingredients
Flour 1-1/2 cups
Baking powder 1-1/2 tsp
Caster sugar 6 tbsp
Salt 1/2 tsp
Butter 1/3 cup
Milk 1/2 cup
Egg 1
Vanilla essence 1/2 tsp
Butter (melted) 2 tbsp
Brown sugar 1/2 cup
Flour 2 tbsp
Ground cinnamon 1/2 tsp
Cooking Instructions
Mix together flour, baking powder, sugar and salt.
Cut in butter with pastry blender or two knives till crumbs form.
Beat egg, then stir in milk and vanilla.
Add egg-milk mixture to flour mixture all at once.
Stir carefully until just blended.
Pour batter into greased and floured 9-inches square pan and spread evenly.
Drizzle top with melted butter.
In small bowl mix together brown sugar, 2 tbsp flour and 1/2 tsp cinnamon.
Sprinkle on top of cake.
Bake in preheated oven at 220 degrees C for 15 to 20 minutes, or until a toothpick inserted into center of cake comes out clean.