Preheat Your Oven: Start by preheating your oven to 175°C (350°F). This ensures that the oven is at the right temperature when you place the cake inside, allowing for even baking. While the oven is heating up, prepare your baking pan by greasing it with butter or cooking spray. This step prevents the cake from sticking to the pan, making it easier to remove once it’s baked. If desired, you can also line the bottom with parchment paper for added insurance against sticking.
Mix Dry Ingredients: In a large mixing bowl, combine the all-purpose flour, baking powder, baking soda, and salt. Use a whisk to thoroughly mix these dry ingredients together, ensuring that the baking powder and baking soda are evenly distributed. This step is crucial as it helps to create an even rise in the cake. Set this bowl aside while you prepare the wet ingredients.
Cream Butter and Sugar: In a separate mixing bowl, combine the granulated sugar and softened butter. Using an electric mixer or a whisk, beat them together on medium speed until the mixture becomes light and fluffy. This process incorporates air into the batter, which is vital for achieving a light and tender cake. It typically takes about 3-5 minutes to reach the desired consistency.
Add Eggs and Flavorings: Once the butter and sugar are well creamed, add the eggs one at a time, beating well after each addition. This ensures that each egg is fully incorporated before adding the next, which contributes to the cake’s structure. After adding the eggs, mix in the vanilla extract and milk, continuing to beat until the mixture is smooth and combined.
Combine Wet and Dry Ingredients: Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix; it’s important to stop as soon as there are no visible streaks of flour. Overmixing can lead to a dense cake, so gentle folding with a spatula may be beneficial at this stage to ensure everything is well incorporated.
Layer the Batter: Pour half of the batter into the prepared cake pan, smoothing it out evenly with a spatula. Next, sprinkle a mixture of cinnamon and brown sugar over the batter to add flavor and a sweet layer. After that, carefully pour the remaining batter on top, spreading it evenly to cover the cinnamon-sugar layer. This layering creates a delightful swirl and enhances the taste of the finished cake.
Bake the Cake: Place the cake pan in the preheated oven and bake for 30-35 minutes. To check if the cake is done, insert a toothpick into the center; if it comes out clean or with a few moist crumbs, the cake is ready. If there’s wet batter on the toothpick, continue baking for a few more minutes, checking periodically until it’s fully baked. Once done, remove the cake from the oven and let it cool in the pan for a few minutes before transferring it to a cooling rack to cool completely.