Girl Scout cookie milkshakes on menu at a Michigan bakery for one weekend only Updated Mar 03, 2021; Posted Mar 03, 2021 Facebook Share HOWELL, MI - This takes milk and cookies to another level. A Michigan bakery known for its Instagram worthy extreme milkshakes is adding Girl Scout cookie shakes to its menu for one weekend only. M Street Baking Co., located at 117 N. Michigan Ave. in Howell, is selling the Girl Scout cookie shakes on top of its five permanent milkshake flavors of M & M, chocolate donut, birthday party, cookies n’ creme and millionaire. The bakery also offers a different featured shake every couple of weeks for a limited time.