My Best Banana Cupcakes

Bahan-bahan (18 porsi)

• 2 cups (250g) all-purpose flour (spooned & leveled)
• 1 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1 teaspoon ground cinnamon
• 3/4 teaspoon salt
• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 1/2 cup (100g) packed light or dark brown sugar
• 1/2 cup (100g) granulated sugar
• 2 large eggs, at room temperature*
• 1/4 cup (60g) sour cream or plain yogurt, at room temperature*
• 2 teaspoons pure vanilla extract
• 1 and 1/2 cups (345g) mashed bananas (about 4 medium or 3 large ripe bananas)
• 1/2 cup (120ml) buttermilk, at room temperature*
• 8 ounces (226g) full-fat brick cream cheese, softened to room temperature
• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 3 cups (360g) confectioners’ sugar, plus an extra 1/4 cup if needed
• 1 teaspoon pure vanilla extract
• 1/2 teaspoon ground cinnamon
• 1/8 teaspoon salt
• optional: banana slices and/or crushed Nilla Wafer cookies