For the Cake

• 2 cups all-purpose flour – Creates a soft but sturdy cake structure.
• 1½ teaspoons baking powder – Helps the cake rise and become light and fluffy.
• ½ teaspoon baking soda – Adds additional lift and helps create a tender crumb.
• ½ teaspoon salt – Balances the sweetness and enhances the flavors.
• 1 teaspoon ground cinnamon – Adds warm, classic apple-dessert flavor.
• ½ cup unsalted butter, softened – Gives the cake a rich buttery texture.
• ¾ cup granulated sugar – Provides sweetness and helps create a tender crumb.
• ¼ cup packed brown sugar – Adds moisture and a deeper caramel-like flavor.
• 2 large eggs – Help bind the ingredients and provide structure.
• 1 teaspoon vanilla extract – Enhances the overall flavor.
• ¾ cup buttermilk – Keeps the cake moist and tender.

For the Cinnamon Apple Filling

• 3 medium apples, peeled, cored, and diced – Use firm apples such as Granny Smith, Honeycrisp, or Pink Lady.
• ¼ cup packed brown sugar – Adds rich sweetness to the apples.
• 1 teaspoon ground cinnamon – Provides warm cinnamon flavor.
• ¼ teaspoon ground nutmeg – Adds subtle warmth.
• 1 tablespoon all-purpose flour – Helps absorb excess apple juices.
• 1 teaspoon lemon juice – Brightens the apple flavor and balances sweetness.

For the Cinnamon Glaze

• 1 cup powdered sugar – Forms the sweet base of the glaze.
• 1–2 tablespoons milk – Adjusts the glaze to the desired consistency.
• ½ teaspoon ground cinnamon – Adds warm cinnamon flavor.
• ½ teaspoon vanilla extract – Adds extra depth and sweetness.