Autumn Apple Cinnamon Cake My Crumb Topped Slice of Heaven

Ingredients

• ½ cup (100g) granulated sugar
• ⅓ cup (40g) packed light brown sugar
• ½ cup (60g) all-purpose flour
• ¼ teaspoon ground cinnamon
• ¼ cup (57g) cold unsalted butter, cut into small cubes
• 2 ½ cups (300g) all-purpose flour
• 1 teaspoon baking powder
• ½ teaspoon baking soda
• ½ teaspoon salt
• 1 teaspoon ground cinnamon
• ½ teaspoon ground nutmeg
• ½ cup (113g) unsalted butter, softened
• 1 ½ cups (300g) granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 cup (240ml) buttermilk (or milk with 1 tbsp lemon juice)
• 3 cups (approximately 3 medium) peeled and diced apples