Cookie Dough(n't You Want Some) Frosting?!

For my BFFL's birthday, there had to be dessert.  He's not a cake person (my friend?  NO!!), but he likes cookies and is tolerant of brownies.  My compromise?  Triple Chocolate Ghiradelli Brownies (made into individual cupcakes with an egg-free) Chocolate Chip Cookie Dough Frosting.
Ingredients:
3 sticks unsalted butter (1.5 C) at room temp
3/4 C light brown sugar, packed
3 1/2 C confectioner's sugar (powdered sugar)
1 C flour
3/4 tsp salt

3T milk

3 1/2 tsp vanilla extract

1 C mini chocolate chips

Directions:
1. Beat together brown suagr and butter until creamy.
2. Mix in confectioner's sugar until smooth.
3. Beat in flour and salt until smooth.
4. Mix in vanilla and milk until well blended.
5. Stir in chocolate chips.
6. Chill to make more firm, but just heap it on your cupcakes. There's no need to be pretty about it!
I think these are best a little chilled, but room temp isn't bad, either, they just get excessively gooey!  :)
 

Why yes, that is Scary Spice popping out of his cupcake frosting.  Why do you ask?

 PS - if you take these to a bar, everyone will be your friend if you share!!