• Preheat the oven to 350°F
• Coat a 9x13-inch baking dish with non-stick baking spray. Set aside.
• In a large bowl of a standing mixer, on medium speed, add the butter and brown sugar and mix until creamy.
  1 cup unsalted butter, 2 cups light brown sugar
• Reduce the speed low speed, and add the vanilla and mix until combined.
  1 Tablespoon vanilla extract
• Begin to add the eggs one at a time, continue to mix on low until well combined.
  2 large eggs
• In a medium sized bowl add the flour and salt and whisk to combine.
  2 cups all-purpose flour, 1 teaspoon kosher salt
• Add the flour mixture to the butter mixture, slowly, mix until well combined.
• Remove the bowl from the stand mixer and fold in the bananas.
  2 ripe bananas
• Pour the batter into an even layer on the baking pan.
• Bake for 45 minutes, or until the center is set.

For the Salted Caramel Buttercream

• In a large bowl of a stand, with a paddle attachment add the butter, sugar, salt, and caramel topping and mix on low-medium until well combined for about 3 minutes.
  1/2 cup unsalted butter, 2 cups confectioner's sugar, ½ teaspoon salt, ¼ cup caramel topping
• Add the milk and mix for another 2 minutes on low speed.
  1½ teaspoons whole milk
• Once the banana bars are cool, top with the buttercream.