Peanut Butter and Banana Bread

Ingredients

• 1 stick (4 oz or 125 g) butter
• 1/2 cup (4 oz or 125 g) peanut butter
• 2/3 cup (5 oz or 150 g) granulated sugar
• 1 cup (8 oz or 250 g) very ripe banana, mashed
• 2 (2 oz or 60 g) whole eggs
• 1 1/2 cups (6 oz or 185 g) all-purpose flour
• 2 teaspoons (8 g) baking powder
• 1/2 teaspoon (2.5 g) Kosher salt
• 1/4 teaspoon (1.5 g) baking soda
• 1/4 cup (2 fl oz or 60 ml) buttermilk