Jackie Kennedy's International Coffee Cake

1/2 cup butter
1 cup sugar
2 eggs
2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon vanilla extract
1 cup sour cream
1/3 cup granulated sugar
1/2 teaspoon cinnamon
1/3 cup brown sugar
1/2 cup chopped pecans
2 tablespoons butter

Cream butter; add sugar; cream together. Add eggs, one at a time, beating well.

Sift together flour, baking powder, baking soda and salt; add to first mixture, alternating with sour cream. Begin and end with flour mixture. Stir in vanilla extract.

In small dish, mix sugars, pecans, cinnamon and 2 tablespoons butter. Pour 1/2 of batter in greased 10-inch tube pan. Top with 1/2 sugar mixture. Pour in rest of batter and top with rest of sugar mixture.

Bake at 325 degrees F for 45 minutes.