Banana Bread Brownies

Bahan-bahan (16 porsi)

• 1 cup raw walnut halves*
• 6 tablespoons unsalted butter
• 1 cup mashed ripe banana (about 3 medium)
• 2/3 cup honey
• 1/3 cup light or dark brown sugar
• 1 large egg
• 2 teaspoons pure vanilla extract
• 3/4 cup all-purpose flour
• 3/4 cup white whole wheat flour (or swap additional all-purpose flour)
• 1/2 teaspoon ground cinnamon
• 1 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon kosher salt
• 6 tablespoons unsalted butter
• 1 1/2 cups powdered sugar
• 1 teaspoon pure vanilla extract (divided)
• 1 to 2 tablespoons heavy cream (if you have it or half-and-half or milk of choice)