1. Prepare the Cake Pan

• Preheat your oven to 350°F (175°C).
• Grease the cake pan with butter or cooking spray and line the bottom with parchment paper for easy removal.

2. Mix the Dry Ingredients

• In a medium bowl, sift together the flour, baking powder, and salt. Set aside.

3. Cream the Butter and Sugar

• In a separate bowl, beat the softened butter and granulated sugar with an electric mixer until light and fluffy (about 2–3 minutes).

4. Add the Wet Ingredients

• Beat in the egg and vanilla extract until fully incorporated. Scrape down the sides of the bowl as needed.

5. Combine the Wet and Dry Ingredients

• Gradually add the dry ingredients to the wet ingredients in three additions, alternating with the milk. Begin and end with the dry ingredients. Mix until just combined—do not overmix.

6. Bake the Cake

• Pour the batter into the prepared pan and smooth the top with a spatula.
• Bake for 25–30 minutes, or until a toothpick inserted into the center comes out clean.
• Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.

7. Prepare the Frosting

• Beat the softened butter until smooth and creamy.
• Gradually add the powdered sugar, mixing on low speed until combined.
• Add the vanilla extract and heavy cream, 1 tablespoon at a time, until the frosting reaches your desired consistency.

8. Assemble and Decorate

• Once the cake is completely cool, spread an even layer of frosting over the top and sides. Use an offset spatula for a smooth finish.
• Decorate with sprinkles, fresh fruit, or piping for a festive touch.