Basil Plants per Pesto recipe

It takes 8 basil plants to produce enough leaves for the 2 cups called for in the recipe I have for Pesto. I am totally blessed that I happened to have planted enough seeds for 8 plants. I'll mark that up to God for the help. Of course I should note that my basil variety produces broad leaves about 2 inches wide and 3 1/2 long approximately. I'll make more this weekend.