Preheat oven to 350 degrees. In a small sauce pan, melt the unsweetened chocolate with the butter over medium low heat. Take off the heat and add in the granulate sugar, mix to combine.
Pour mixture into large bowl and using a hand mixer, beat in the eggs one at a time. Then, add in salt and flour a little at a time, beating after each addition until smooth.
Pour half of the mix into a well greased (or lined with parchment) 9x15 inch pan, place truffles evenly throughout mixture. Pour remaining brownie mix on top. Bake for 30 minutes, place on wired rack until cool.
White Chocolate Ganache
Place the butter in the bottom of a microwave safe bowl. Place the white chocolate chips on top of the butter. Pour the sweetened condensed milk on top of chocolate. Heat in microwave on high for 1 minute. Let sit 1 minute and stir.
Repeat again and a third time only if necessary. Mixture should combine fully and be melted.
Pour on top of brownies and with a spatula smooth it out so it covers the top.
Place in fridge for at least one hour so the ganache has time to set. Cut, serve and enjoy!