After the pan has heated about 2-3minutes, add 1 TBSP butter and a drizzle of olive oil. (about 1/2 TBSP). When butter is melted and sizzling hot , add in seasoned chicken breast. Do not touch for at least 2 minutes. Flip and sear other side about 1-2 minutes. You want a golden brown crust on each side. You will have to batch sear your chicken about 4 at a time and transfer over to a cookie sheet to finish cooking in the oven if you are cooking several breast. If you are just cooking a few in the cast iron. You can transfer that directly to the oven.