Mix the oil in (or dump some of it if you want to lower fat content) and store it in the fridge so it will not separate so quickly. I get a premixed natural PB in the health food dept. that is already mixed up and refridgerated so that you don't have to do that part. Haven't found other butters that do this. Wish they would. You can also store it up side down after you do this which helps with separating but make SURE the lid is very tight.