This recipe is sponsored by Target. Parmesan pulls double duty in this soup chock-full of seasonal vegetables: The rind is used to enrich the broth, and the cheese is shaved on top as a garnish. Onions and garlic are sautéed, then simmered with vegetable broth, peas, asparagus and ravioli. Arugula, lemon and spoonfuls of homemade pesto are added just before serving.
For the soup: Using a vegetable peeler or cheese grater, make shavings from the wedge of Parmesan until you have 1/2 cup. Set aside. Cut off and reserve the rind from the wedge.
Combine the oil, onions and garlic in a large heavy-bottomed pot or Dutch oven. Cook, stirring occasionally, over medium-low heat until the onions are translucent, about 5 minutes.
Add the asparagus, broth and Parmesan rind. Bring the mixture to a boil then reduce it to a simmer. Add the ravioli and peas and cook until the ravioli are al dente, 4 to 5 minutes.
Turn off the heat then immediately stir in the arugula and lemon juice. Taste and season the soup with salt and pepper. (If the Parmesan rind hasn’t fully melted, remove and discard it.)
For the pesto topping: Toast the pine nuts in a small skillet over low heat, stirring frequently, until golden brown, about 5 minutes.
Combine the toasted pine nuts, basil, Parmesan, garlic, 1/2 teaspoon salt and 1/4 teaspoon pepper in a food processor and pulse until roughly chopped. With the motor running, pour the oil in through the feed tube and process until smooth. If needed, scrape down the sides of the bowl with a rubber spatula and continue processing.
Drizzle the pesto over the soup, garnish with the shaved Parmesan and serve.