If using chicken breasts, butterfly them and pound slightly with meat hammer or flat side of heavy spoon until about 1/2 inch thick. (wellnessmama.com)
Butterfly chicken breasts and pound with the flat side of a spoon or meat hammer until 1/2 inch thick. (empoweredautoimmune.com)
The delegates staggered out as though they'd just been tenderised with meat hammers. (theguardian.com)