Pecan Wonder Coffee Cake
["2 c. flour", "1 tsp. baking powder", "1/2 tsp. salt", "1 c. sugar", "1 c. soft margarine", "2 eggs", "1 tsp. vanilla", "1 tsp. soda", "1 c. buttermilk*"]
["*Sour cream or sour milk may be used instead."]
["flour", "baking powder", "salt", "sugar", "margarine", "eggs", "vanilla", "soda", "buttermilk"]