Super Duper Easy Apple Cake Recipe

Ingredients

• 2 cups all-purpose flour
• 1 ½ teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon ground cinnamon
• ½ teaspoon salt
• ½ cup unsalted butter, melted
• 1 cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 2 cups peeled and chopped apples
• ⅓ cup chopped walnuts (optional)
• Crumb Topping:
• ½ cup all-purpose flour
• ½ cup granulated sugar
• ¼ cup unsalted butter, melted