My Ube Cookies (super chewy + not too sweet)

Ingredients

• 196g (14 tablespoons) unsalted butter, softened slightly to room temperature
• 230g (¾ cup) sweetened condensed milk
• 160g (¾ cup) dark brown sugar (packed if measuring by volume)
• 2 ½ teaspoons ube extract
• ½ teaspoon vanilla extract
• 1 teaspoon baking powder
• ¾ teaspoon salt (I use Diamond Crystal Kosher; use half with finely granulated salt)
• 240g (2 cups) all-purpose flour unbleached