Coffee Cake

2 cups brown sugar, firmly packed
2 cups all-purpose flour
3/4 cup melted margarine

Mix together and reserve 1 cup for topping.

1 egg
1 teaspoon vanilla extract
1 cup hot coffee
1 teaspoon baking soda

Add to the above mixture and mix by hand. Pour into a 9 x 13-inch pan. Sprinkle on reserved cup of topping. Bake at 350 degrees F for 30 minutes.