1/4cuppowdered sugaror less, depending on how sweet you want it
Mix all ingredients, except chocolate chips, until combined. Fold in chocolate chips. Batter will be thick and sticky, but that's a good thing. That's what you want!
Drop rounded tablespoons of dough onto an ungreased baking sheet. I like to use a cookie scoop - it gives the perfect amount of dough each time.
Bake in a 350 degree oven for about 8 minutes. Allow to cool on the sheet for a few minutes before transferring to a cooling rack.
With your hand mixer, whip the ingredients together until smooth and fluffy. The idea is to thicken the frosting and give it a more homemade texture and flavor.
Spread frosting on the backside of one cookie and top with another cookie. Preferred method - I used a pastry bag and piped the frosting on each cookie, and then smooshed the frosting down with another. It's much quicker and easier, and there's little to no chance of breaking a cookie!
Doctored Up Canned Icing https://www.yellowblissroad.com/cake-mix-cookie-sandwiches-neater/