1 and 1/2 cups (190g) all-purpose flour
3/4 teaspoon baking powder
1/2 teaspoon salt
1 cup (200g) packed dark brown sugar
1/2 cup (100g) granulated sugar
1/2 cup (1 stick or 115g) unsalted butter, softened to room temperature
2 large eggs, must be at room temperature
1 teaspoon vanilla extract
1/2 cup (120ml) whole milk (or even buttermilk, do not use skim milk or 1% milk)
1/2 cup (1 stick or 115 grams) salted butter (or unsalted butter)
1 cup (200 grams) packed dark brown sugar
1/3 cup (80 ml) heavy cream
1/2 teaspoon salt
2-3 cups (240-360 grams) powdered sugar, sifted
additional pinch of salt, as needed
salted caramel candies for decoration, optional