01 -
Preheat oven to 275°F (135°C). Grease and flour a 9 x 13-inch baking pan.
02 -
In a small bowl, combine mashed bananas with lemon juice and set aside.
03 -
In a medium bowl, whisk together flour, baking soda, and salt. Set aside.
04 -
In a large bowl, cream 3/4 cup softened butter with granulated sugar until light and fluffy.
05 -
Beat in eggs one at a time, then stir in 2 teaspoons vanilla extract.
06 -
Add the flour mixture to the wet ingredients alternately with the buttermilk. Mix until just combined.
07 -
Gently stir in the banana and lemon juice mixture until evenly distributed.
08 -
Pour the batter into the prepared pan. Bake for 1 hour or until a toothpick inserted in the center comes out clean.
09 -
Remove from oven and place pan directly into the freezer for 45 minutes to retain moisture.
10 -
In a bowl, cream softened butter with cream cheese until smooth. Beat in vanilla, then gradually add confectioners' sugar, mixing on low then high speed until fluffy.
11 -
Spread frosting evenly over the cooled cake. If desired, garnish with chopped walnuts or decorative hearts.