Preheat your oven to 350°F and line a baking sheet with parchment paper. Sprinkle flour over the parchment paper and bake for 10 minutes. Cool completely.
Sift flour and salt over the top, and with your mixer on medium, mix until flour is completely mixed in, 1 to 2 minutes. The frosting will look like course crumbs.
Add 2 tablespoons of the milk and beat, starting on low working up to high until frosting is smooth and fluffy.
If frosting is too stiff, add milk by the 1/2 teaspoon until the frosting reaches your desired consistency.
Fold in your chocolate chips.
Use frosting to frost cupcakes, brownies, or cookies, and enjoy!
*Correct flour measurement is very important in this recipe. For best results, measure by weight or the Spoon and Sweep Method (stir the flour in your container to fluff it up and then spoon it into your measuring cup, sweep excess off with the flat of a knife).