• Preheat oven to 350 degrees. Spray an 8 inch square baking pan or line with parchment paper.
• In a measuring cup mix the milk and the vinegar and set aside.
• Mix the butter and sugar together until light and fluffy.
• Add eggs, Rodelle Vanilla and banana and mix until well combined.
• In another bowl whisk together the flour, baking powder and baking soda.
• Alternate adding the flour mixture and milk mixture and continue to stir until well combined.
• Pour into the baking pan and cook for 20. minutes or until a toothpick inserted in the center comes out clean.
• Remove from oven and cool well on a cooling rack before frosting. I suggest at least one hour.

Frosting

• Cream butter in a mixer until it's fluffy.
• Add powdered sugar a little at a time and continue to mix well until fluffy. Add the milk and beat at high speed. You can add a tad more milk if it's too thick.