In a mixing bowl, whisk together the melted butter, eggs, sugar and vanilla. Once incorporated, add in the flour, salt and baking soda and continue to mix together with a spatula until all lumps are gone.
½ cup unsalted butter, 1 cup light brown sugar, 1 tbsp vanilla extract, 2 eggs, 1 cup all-purpose flour, 1 tsp baking soda, ⅛ tsp salt