Tennessee Banana-Black Walnut Cake With Caramel Frosting | Paula Deen

Ingredients

• 1/2 cup solid vegetable shortening
• 1 1/2 cups granulated sugar
• 2 eggs
• 2 ripe bananas
• 1/4 cup buttermilk
• 1 tablespoon plus 1 teaspoon for cake vanilla extract
• 2 cups all purpose flour
• 1/2 teaspoon baking soda
• 1 cup chopped, plus 2 cups finely chopped for garnish (optional) black walnuts
• 1/2 cup (1 stick) softened Butter
• 1 cup packed dark brown sugar
• 1/3 cup plus more as necessary heavy cream
• 1 (16 oz) box confectioner's sugar