INSTRUCTIONS:

1. Preheat your oven to 350°F (175°C) and line a baking pan with parchment paper.
2. In a saucepan, melt the butter over medium heat until it turns golden brown and smells nutty. Let it cool slightly.
3. In a mixing bowl, combine the brown sugar, granulated sugar, and the cooled brown butter. Mix well.
4. Add the egg, heavy cream, and vanilla extract, stirring until smooth.
5. In another bowl, whisk