Going to agree with the others, the way to do it is using any compost method (bin, tumbler, pile, turned or unturned) but mix the raw manure with a carbon heavy source like cardboard, paper, sawdust, wood chips, shavings, straw (not hay!), leaves or other. You'll not only have a safer, better smelling pile but the carbon secures the nitrogen in your pile and keeps it from just running out into the soil to burn local plants and contaminate groundwater with excess nitrogen.
When you get the right balance, especially if you have a lot of it, it should heat up and break down even quicker than if you left it alone as well. And the biomass from the carbon sources and the balanced diet for bacteria, fungi and worms will improve your garden soil more than the raw manure will.