Ravioli in Creamy Pesto Sauce

 -2 package Ricotta Cheese Ravioli 
-1 Tbsp (15 ml) olive oil
-2 shallots, sliced thinly into half-moons
-salt and pepper to taste
-8 ounce jar pesto 
-12 ounce bag frozen peas
-1 ladle of hot pasta water
-8 ounces heavy cream
-1 tsp lemon zest (zest of one lemon)
-4 fistfuls baby spinach
-freshly grated parmesan cheese to taste
-1 cup toasted pine nuts, optional