Lunch Lady Brownies are a chocolate treat that bring back memories of the school cafeteria, especially school lunch dessert. With their gooey texture, intense chocolate flavor, they are a classic recipe that is a favorite for everyone.
Spread the brownie batter evenly into the prepared baking dish. Bake in preheated oven for 25-30 minutes or until a toothpick inserted into the center comes out clean.
In a large bowl, add powdered sugar and cocoa powder. Whisk a little to get rid of any lumps. Pour milk into the bowl, along with softened butter and mix until smooth. If it is too thick, add in a little more milk until you get the desired consistency.