Preheat the Oven:
Preheat your oven to 350°F (175°C).
Grease and flour a 9-inch round cake pan (use gluten-free flour for dusting).
Mix Dry Ingredients:
In a medium bowl, whisk together the gluten-free flour, baking powder, baking soda, and salt. Set aside.
Cream Butter & Sugar:
In a large bowl, beat the softened butter and sugar together until creamy and light, about 2-3 minutes.
Add Eggs & Vanilla:
Add the eggs one at a time, mixing well after each addition.
Stir in the vanilla extract.
Combine Wet & Dry Ingredients:
Gradually add the dry ingredients to the wet ingredients, alternating with the milk. Start and end with the dry ingredients. Mix until just combined. Be careful not to over-mix.
Bake: