Hot Fudge Sauce Cake

My mom used to make this for us all the time, it's delicious!

1 c flour
2 tsp. baking powder
1/2 tsp sea salt
2 tbs olive oil
3/4 c sugar
1 tsp vanilla
1/2 c milk
Mix well and pour into gresed 8x8 pan.

Mix together:
1 c sugar
4 tbs cocoa
3/4 c hot water

Pour gently over the batter. Bake at 350 degrees for 30 minutes.