Preheat the oven to 350°F and grease and line an 8x8 inch pan with parchment paper.
Whisk together the melted butter, brown sugar, and granulated sugar.
Add in the eggs one at a time and whisk each one until fully incorporated and the batter starts to get lighter in color. Then add in the vanilla extract.
Fold in the cocoa powder, flour, and salt and mix until the batter is smooth and there are no more lumps.
Pour the batter into your prepared baking pan and set aside.
In a small pot over medium-low heat, combine the halva and water. Stir frequently until the halva is melted and a caramel like consistency. You want to be able to easily swirl the halva. Drop small spoonful's of melted halva on top of the brownies and swirl into the brownie batter.
Bake at 350°F for 40-50 minutes or until an inserted knife comes out mostly clean.
Remove from the oven and let cool on a wire rack. Sprinkle with flaky sea salt and enjoy!
Use the edges of the parchment paper, so slide the brownies out of your baking pan and let cool on a wire rack. It's easiest to cut the brownies when they're fully cooled.....but they taste so good when they're nice and warm out of the oven, so live your truth. Store brownies in an airtight container at room temperature for up to a week.