Creating Cornflake Crunch Cake is straightforward if you follow these easy steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, and salt until combined.
3. Cream Butter and Sugar: In another bowl, cream the softened butter and granulated sugar until light and fluffy.
4. Add Eggs and Vanilla: Beat in the eggs, one at a time, followed by the vanilla extract until fully incorporated.
5. Combine Mixtures: Gradually add the dry ingredients to the butter mixture, alternating with the milk. Mix until just combined and smooth.
6. Prepare Topping: In a medium bowl, mix the cornflakes with brown sugar and cinnamon, ensuring the flakes are well-coated.
7. Pour Batter into Pan: Pour the cake batter into the prepared baking pan, smoothing the top with a spatula.
8. Add Topping: Evenly sprinkle the cornflake mixture over the cake batter, pressing down gently to adhere.
9. Bake: Place in the oven and bake for 25-30 minutes. The cake is done when a toothpick inserted in the center comes out clean.
10. Cool the Cake: Remove the cake from the oven and allow it to cool in the pan for about 15 minutes. Then transfer to a wire rack to cool completely.
11. Serve and Enjoy: Slice and enjoy your Cornflake Crunch Cake while it’s fresh and crispy!