Tom Kerridge made them on telly. I normally get ours from Waitrose, but might now stop buying them, as what came out of the oven this evening was the moistest chicken dish I’ve ever made.  And easy too! Two nice breasts cut on the thick side to make a pocket for the butter, I must have done a decent job as none of the butter got out while cooking. Garlic butter- 2 crushed cloves, parsley, cayenne pepper( not a mind blowing addition for me), salt, all blitzed. When stuffed, I seasoned the breasts, tossed in flour, egg and panko, quickly panfried and cooked in 200 degrees for 15 minutes.  Like I said- super moist. Served with mixed greens and cold San Miguel beer. Destroyed the lot.