6 ounces white chocolate chopped
1 1/2 cups unsalted butter chopped
2 2/3 cups caster sugar (superfine)
1 1/2 cups milk
2 cups all purpose flour
2/3 cup self-rising flour
1 1/2 teaspoon vanilla extract
3 eggs (room temp)
Preheat oven to 300 degrees. Combine white chocolate, butter, sugar and milk in a large saucepan; stir over low heat until smooth. Pour mixture into a large bowl; cool for 15 minutes.
Whisk in sifted flours, extract and eggs. Pour mixture into greased and floured pan; bake for 1 1/2 hours or until toothpick comes out clean.
Source: Thanks https://www.sunjournal.com/2020/02/23/linda-noddins-simple-white-chocolate-cake/