To Die For Banana Cake with Vanilla Bean Frosting

INGREDIENTS

• 1/4 teaspoon fine sea salt (or table salt)
• 1/2 cup sour cream
• 3/4 cups mashed super ripe bananas
• 1 teaspoon pure vanilla extract
• 2 tablespoons unsalted butter, room temperature
• 2/3 cups granulated sugar
• 1/2 teaspoon vanilla bean paste (or equal amount of pure vanilla extract)
• 1/2 teaspoon baking soda
• 1 1/4 cup confectioner's sugar
• 1 large egg
• 1/4 cup heavy cream
• 1 cup all purpose flour