I just made 3 batches of Pesto this morning, and have at least that much basil still in the garden. I freeze it in the 1/2 cup glad containers. it will thaw in under a minute in the micro. the top layer will oxidize/darken but it's still good to use. my 5yo loves "green noodles" so I always like to have a small container in the fridge for a quick and easy side dish. you do need a food processor for this, I've tried the blender and the mixture is just too stiff.
2 cups basil leaves, packed - it's at least 4-5 cups of loose leaves
1/4 cup pine nuts, toasted
1/2 tsp salt
1/2 cup olive oil
4 cloves garlic
1/4 cup grated parmesan cheese (not the stuff in the kraft can - get the good stuff, I buy a chunk and grate my own)
1/4 cup grated romano cheese (ditto)
put everything except cheese in a processor, chop finely. stir in cheese by hand. if the mixture is too stiff, add a bit more oil. place into small containers and freeze.