Spread the flour out on a large rimmed baking sheet and place it in the preheated oven for 5 minutes. Remove it to a bowl and let it cool completely. If the flour looks lumpy, whisk it briefly to break up the clumps.
1 1/4 cups all-purpose flour
In a mixing bowl using an electric mixer, combine the butter and brown sugar. Beat for 3 to 4 minutes, or until light and fluffy. Add the milk, vanilla extract, and salt; beat until well blended.
1/2 cup unsalted butter | 3/4 cup light brown sugar | 1 tbsp milk | 1 tsp vanilla extract | 1/2 tsp salt
When the flour has cooled completely, add it to the creamed mixture. Beat until blended. Fold in the chocolate chips.