If you grow your own basil this is a great use for the big plants when summer is ending. This pesto can be made in big batches and frozen for months.
FYI: According to Jacques Pepin on one of his TV shows, if you blanche the basil briefly it will not oxidize and therefore will retain its green colour. I would imagine this would hold true for the spinach as well. - 29 Sep 2008
Astronomical volume-much too much for my blenders. Suggest using one third quantities. Great taste though. I didn't have enough basil growing to meet full quantity. - 20 Sep 2013
I had to find a way to use up my end of summer basil and this recipe came to the rescue. Tossed it through my spaghetti tonight. You could also add a can of diced tomatoes for an easy pasta sauce or stir it through mashed potatoes for something different. - 10 Jan 2010