Phyllis Trimble's Brownie Cake

I can't wait to make this. Phyllis makes the best banana bars in the world. So I am sure these is just as good.

Brownie Cake

2 cups sugar

3 Tbsp cocoa

1 cup water

½ cup oil

1 square margarine

½ cup milk + 1 tbsp vinegar + 1 tsp soda

2 eggs

2 cups flour

1 tsp vanilla

2 cups marshmallows(set aside)

Mix all ingredients together except Marshmallows.
Spread in a 11 x 14 pan and bake 14-16 minutes. (Check for doneness)
Romove pan from oven and put marshmallows on top. Return to oven for about 3 more minutes.Frost immediatly!!


Frosting:

1 square margarine

2 tbsp cocoa

2 cups powdered sugar

1/3 cup evaporated milk (use less if using regular milk regular milk)
Mix together and put on cake.