These are my favorite cookies of all time. I will gladly give up white chocolate chip macadamia cookies for these any day. People will look at you weird if you tell them they're eating boiled cookies. You know, that look you gave your computer screen when you read the title. You'll get that one. You could call them chocolate oatmeal cookies if you want. But, that isn't what Granny called them.
Boiled cookies are easy, even for the kitchen challenged. They may not set right if you make them on a day with 100% humidity though.
1 stick butter
2 cups sugar
1/2 cup Cocoa
1/2 cup milk
1 t. vanilla
2 1/2 cups oatmeal
Put everything except the oatmeal in a pot. Bring to a roaring boil for 5 minutes. Remove from heat, stir in oatmeal. Drop by the spoonful onto wax paper. Once they're cool enjoy!
Use real butter. I've found that using no-salt butter will cause them to harden even in 90% humidity. The Walmart brand works just fine.
For cocoa we have a can of Hershey's. It works great.
Use real oatmeal, not instant. Again, we bought the big tub of Walmart oatmeal. Hey, it'll only be used for these cookies.
We harden ours on our steel table in the kitchen. This causes them to harden almost instantly. No waiting for them to cool.
Finally, hide them from the kids. These things rock. If you share them now you'll be sharing them forever.