Once the kernel pops, add ¾ of a cup of yellow popcorn kernels into the pan and cover with a lid. Shake the pan to coat all the kernels with oil. Once all the kernels have popped, remove the pan from the heat.
Transfer to a large bowl that has a lid. Melt butter in the microwave then drizzle ½ of the butter over the popcorn, place the lid on the bowl and shake.