Recipe: Blueberry Banana Cake with Cream Cheese Icing

Name: Recipe: Blueberry Banana Cake with Cream Cheese Icing
Ingredients: 3/4 cup unsalted butter, softened; 1 cup white sugar; 1 cup brown sugar; 3 eggs; 1 teaspoon vanilla extract; 2 tablespoons rum (optional); 1 1/2 cups mashed bananas (from about 3 bananas); 3 cups flour; 1 1/2 teaspoon baking soda; 1/2 teaspoon salt; 1 lemon, juiced and zested; 1 1/2 cups milk; 2 cups blueberries, washed and picked over; 1/4 cup butter, softened; 1 (8 ounce) package light cream cheese, softened; 1 tablespoon rum (optional); 3 cups confectioners' sugar; Pinch salt