1. Preheat oven to 180℃/350℉. Grease an 8x8 inch baking pan with oil/butter and line the bottom of a pan with butter/parchment paper. 2. In a large bowl, beat eggs and sugar on high to medium speed until the mixture is light and fluffy.
3. Add vegetable oil and mix till incorporated.
4. Sift in flour, salt, and baking powder, beating on low speed until smooth.
5. In a small saucepan, heat milk till tiny bubbles start to appear around the edges. Reduce the heat to low flame and add butter, mix till butter is melted. Remove from flame and add vanilla extract.
6. Add to batter, and beat on low speed just until combined.
7. Pour into a greased baking pan. Bake at 180℃/350℉ for 25-30 minutes or until a toothpick inserted in the center comes out clean, 8. After 5 minutes transfer to a wire rack dust with powdered sugar and let it cool completely before storing or serving.
