Ingredients
For the dulce de leche
1.5 L (6 cups) Whole milk
450 g (2¼ cups) Sugar
1 tsp Vanilla extract
¾ tsp Baking soda
½ tsp Salt
For the cake
60 g (½ stick) Soft butter
15 g (1 tbsp) Coconut oil
70 g (2.5 oz) Dulce de leche
OR
60 g (⅓ cup) Brown sugar
1 tsp Vanilla extract
2 Eggs
180 g (1⅓ cup) All purpose flour
1¼ tsp Baking powder
120 g (½ cup) Milk
Pinch of salt (As I say in the video, this cake is designed to NOT be sweet)
Method
For the dulce de leche (make the day before)
In a large and tall pan over medium heat, combine the milk, sugar, baking soda and a pinch of salt.
Allow the sugar to dissolve and bring to a gentle boil stirring often or the mixture will bubble over.
Keep at in a constant boil (for 1 – 1½ hours) until it becomes deep amber in color.
Take off the heat, and refrigerate overnight.
For the cake
In a large bowl cream together butter, coconut oil, vanilla, and dulce de leche (or brown sugar).
Add the eggs.
Add the sifted dry ingredients and milk.
Pour the batter in two greased 5 inch pans and bake the cakes in a preheated oven (180°C / 360°F) for 25 minutes or until a toothpick inserted in the center of the cake comes out clean.
Tips
You can either use two 5 inch pans or one 8 inch cake pan.
I cooked my dulce de leche for exactly 1 hour and 20 minutes; but your cooking time will vary depending on the level of heat. For a thicker consistency, cook the dulce de leche for 10 min longer.