You don't need a store bought package for microwave popcorn! Place 1/4 C popcorn kernels in a brown paper lunch bag. Fold down the top of the bag and crimp to seal. Microwave on high until popped, between 1 - 3 minutes, depending on your microwave. Do this until you have 6 C of popped popcorn. Season with 1/4 t salt and transfer to a bowl. Add 2 T melted unsalted butter, 1 T plus 1 1/2 t jarred pesto. Stir to mix and serve.