I use this recipe because of how easy is to prepare and i love that don't need to rest or refrigerate.. just mix, cut and bake!
2 lb of flour (regular)
1 lb of shortening (crisco)
1 can of sweetened condensed milk (395 grams/14 oz.) I use Nestlé brand..
Just combine together the flour with the shortening (by hand) and when is combined add the condensed milk slowly and keep mixing... the resulting dough is kind of brittle, you can add little more condensed milk to fix that... but i usually roll the dough into plastic and the dough doesn't sticks that much... this isn't a very sweet cookie, so goes great with the additional RI or fondant that you may add to decorate..
Hope it helps..