Yummy Creamy Coffee Cake

1 c. sugar
1 c. margarine
2 eggs
2 tsp. vanilla
1 Tbsp. vinegar
1 c. milk
2 1/2 c. flour
1 tsp. soda
1 tsp. salt

Topping:
1/2 c. granulated sugar
1 Tbsp. cinnamon
2/3 c. brown sugar

* Cream sugar, margarine, and eggs; add vanilla. Mix 1 tablespoon vinegar in 1 c. milk and add alternately with flour, soda, and salt. Spread half dough in 13 x 9" greased pan. Sprinkle half topping and cover with rest of dough. Sprinkle rest of topping and optional chopped nuts over top. Bake 35 minutes at 350 degrees.