Skillet Brownie Gelson's

Ingredients

• 6 oz finely chopped bittersweet chocolate
• 4 Tbsp unsalted butter, cut into pieces, plus more for the pan
• ½ cup neutral oil, such as vegetable or coconut
• 1 cup light brown sugar
• ½ cup granulated sugar
• 1 ⅓ cup all-purpose flour
• ½ tsp baking powder
• ½ tsp fine sea salt
• 3 large eggs
• 1 ½ tsp vanilla extract
• ¾ cup heavy cream
• Flake salt, to taste