Banana Cake With Cashews with lemon

1 1/2 bananas , ripe, a medium size 1/4 cup buttermilk 1/2 teaspoon vanilla 1/3 cup butter , softened 3/4 cup sugar 1 egg 1 cup all-purpose flour 1/2 teaspoon[...]

2 cups all-purpose flour 3/4 teaspoon baking soda 1/2 teaspoon baking powder 1/2 teaspoon salt 1/2 cup unsalted butter , room temperature 1 1/2 cups sugar 2[...]

1/3 cup packed brown sugar 1/4 cup all purpose flour 1/4 teaspoon ground cinnamon 2 tablespoons cold butter or 2 tablespoons margarine 3/4 cup pecans ,[...]