1Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13 baking pan.
2Mix chocolate syrup, flour, white sugar, 1/2 cup butter, eggs, vanilla extract, and salt together in a bowl until smooth; spread into prepared baking pan.
3Bake in the preheated oven until the top is dry and the edges have started to pull away from the sides of the pan, 30 to 45 minutes. Allow to cool completely.
4Beat confectioners' sugar, 1/2 cup butter, amaretto liqueur, and almond extract in a bowl until smooth; spread over cooled brownies.
5Stir chocolate chips and 2 tablespoons butter together in a saucepan over low heat until melted and smooth, 1 to 2 minutes. Let cool slightly and drizzle over frosted brownies.