scoop 1/4 of the tub of frosting into a small pan
heat slowly over low heat until it's melted
set out a large baking sheet to hold the finished donuts while the frosting hardens up
while the frosting heating up sift the powdered sugar if you plan to use it, you can use store-bought frosting instead
then slowly add the milk in small amounts to the sugar, stirring after each addition, until its an icing consistency put it in a heavy-duty ziploc and clip the corner off for a tip OR load it in a reuseable icing bag
once the frosting has melted remove it from the heat
take one plain donut and dip it in the frosting, lift it up, allow it to drip a bit then dip it in a second time, this method gives you complete thick coverage
lay it on the prepared baking sheet
dip two more the same way
add more frosting to the pan and let it melt while putting the webs on the donuts
on the first donut you dipped make 3 concentric "imperfect circles" around the top of the donut with the icing you made OR the store-bought frosting
feather it out using a toothpick to make a web
add a spider ring
repeat with the other two donuts
then repeat with the rest of the donuts, working in batches of three
let them sit for a while to firm up and they're party ready!