High-Altitude Banana Bread With Crumb Topping Recipe | Epicurious

Ingredients

• 6 tablespoons unsalted butter, softened
• 3⁄4 cup granulated sugar
• 2 eggs
• 1 cup mashed ripe banana
• 3 tablespoons water
• 1 teaspoon vanilla extract
• 2 cups all-purpose flour
• 1 teaspoon salt
• 3⁄4 teaspoon baking soda
• ½ teaspoon ground cinnamon
• ¼ teaspoon ground nutmeg
• ½ cup chopped walnuts
• 3⁄4 cup all-purpose flour
• ½ cup firmly packed brown sugar
• ½ cup old-fashioned oats
• ¼ cup chopped walnuts
• 6 tablespoons unsalted butter, melted
• ¼ teaspoon salt