These are beyond easy, and really quick.
1 can of plain refrigerated biscuits
(I get the plain ones that have 10 per can. Sometimes these come 4 cans in a package for around $1 — the cheap little ones work great for this)
oil for cooking
Pour oil about an inch deep in a small saucepan, and heat over medium heat.
While oil is heating, open the can of biscuits and separate them. Use a donut hole cutter or a bottle lid to cut a hole in the middle of each biscuit and make a donut shape.
Drop the biscuits in the hot oil a few at a time. When they are browned on the bottom, turn them over to finish cooking, then remove them from the pan. You don’t want them to cook too fast, so they will be done in the middle, yet not burnt on the outside.
Drain on paper towels, and roll in sugar or powdered sugar. You can let them cool and put frosting on, if you prefer. Kids love helping with this!