-
Heat oven to 275 degrees.
-
Grease a sheet cake pan.
-
In a small bowl, mix mashed bananas with lemon juice. Set aside.
-
In a medium bowl, mix flour, baking soda, and salt. Set aside.
-
In a large bowl, cream 3/4 cup butter and 2 1/8 cups sugar until light and fluffy.
-
Beat in eggs one at a time and then stir in 2 tsp. vanilla.
-
Beat in the flour mixture alternately with the buttermilk.
-
Stir in the banana mixture.
-
Pour batter into prepared pan and bake in a preheated oven for one hour or until toothpick comes out clean.
-
Remove from oven and place directly into the freezer for at least half hour.
-
Frost with buttercream frosting: 1 stick butter, 4 cups powdered sugar, 1 tsp. vanilla, milk to consistency.