Cream butter and sugar. Mash bananas and add to butter mixture along with the beaten eggs, vanilla and buttermilk. Mix well. Add flour, soda and salt and beat well. Pour into 2 well greased and floured 9"x 5"x 3" loaf pans.
Bake 45 to 50 minutes or until bread pulls away from sides of pan. Round cake pans will only take 25 to 30 minutes. Remove from oven when toothpick inserted in center comes out clean or with just a few crumbs, no wet batter. Cool in pan.
For topping, melt butter in saucepan. Add sugar and milk. Cook until very syrupy. Remove from heat and add chopped pecans. Pour over bread, spreading to all the corners and place under broiler until bubbly and brown. WATCH CLOSELY so topping does not burn. Remove from oven and let sit until cool. Carefully run thin bladed knife around edges of bread to loosen any areas that are sticking and remove from pan. ENJOY!