Ingredients

• cooking spray

• 2 ½ cups all-purpose flour

• 2 teaspoons baking soda

• 1 teaspoon table salt

• 2 cups granulated sugar

• 2 cups mashed banana (from 5 (6 oz.) bananas)

• 1 cup canola oil

• ¾ cup plain whole Greek yogurt

• ¼ cup whole buttermilk

• 2 teaspoons vanilla extract

• 2 large eggs

• 1 cup dark brown sugar

• ½ cup heavy cream

• ⅓ cup unsalted butter

• ¾ teaspoon ground cinnamon

• ¼ teaspoon sea salt

• 1 ½ very ripe bananas, mashed

• ¾ teaspoon vanilla bean paste or 1 1/2 vanilla beans

• 4 tablespoons dark rum (such as Meyer’s dark rum), divided

• 3 ripe bananas, sliced

• 2 cups unsalted butter, softened

• 4 cups powdered sugar

• 1 cup salted banana caramel sauce