In a food processor add Parsley, Cashews, Parmesan, Garlic, 1/2 tsp Salt, Lemon Juice, and 1/4 cup EVOO
Blend until smooth
Set pesto aside (this will make 1/2 cup of pesto but you will only need 1/4 cup for this recipe. You can store the rest in an air tight container in the fridge for up to 5 days.)
Fill a large pot half way with water and bring to a boil
Add 1 Tbs Salt to the water
Add Penne and cook as directed or until al dente
During the last 2 minutes of the pasta cooking add the Asparagus pieces to the water
Scoop about 1/4 cup of pasta water out and set aside
Drain pasta and Asparagus
In a large pan add 2 Tbs EVOO and heat over med heat
Add Prosciutto and cook 1-2 minutes until crispy, remove and place on a paper towel, break into bite size pieces
Add Shallots to pan and sauté 1 minute
Add Prosciutto, Penne, Asparagus, Lemon Zest, and 1/4 cup Lemon Pesto to the pan
Stir in a bit of pasta water to break up the pesto and create more of a sauce