WOW {Warm Oven Wednesday} Cinnamon Coffee Cake

1 cup margarine, softened

2-1/2 cups sugar, divided

2 teaspoons vanilla 

4 eggs

3 cups flour

2 teaspoons baking powder

1 teaspoon baking soda

1 teaspoon salt

2 cups (16 oz) sour cream

2 Tablespoons ground cinnamon

1/2 cup chopped pecans

In large mixing bowl, cream butter and 2 cups sugar until fluffy. Add vanilla. Add eggs, one at a time, beating well after each addition. In small bowl, combine flour, baking powder, soda and salt. Add alternately with sour cream, beating after each addition. In another small bowl, combine remaining 1/2 cup sugar, cinnamon and pecans. 

Spoon 1/3 batter into a greased 10" tube pan. Sprinkle 1/3 of sugar mixture over batter. Repeat layers two more times. Bake at 350 degrees for 60-70 minutes or until cake tests done. Cool for 10 minutes. Remove from pan to a wire rack to cool completely.