Sour Cream Coffee Cake

Topping (mix together)
1/2 C sugar
1/3 C brown sugar, packed
1 tsp cinnamon
1 C chopped pecans

Cake
1/2 C margarine, softened
1/2 C butter, softened
1 C sugar
2 eggs
2 C all-purpose flour
1 tsp baking soda
1/2 tsp salt
1 C sour cream
1 tsp vanilla

Heat oven to 350. Grease 9x13" pan. Cream margarine, butter and sugar; beat in eggs. Combine flour, soda and salt; add alternately to butter mixture with sour cream and vanilla. Spread half the batter in pan. Sprinkle with half the topping. Drop the remaining batter by spoonfuls, spreading to cover topping. Sprinkle with remaining topping. Bake 30-35 minutes.