Creamy Broccoli Pesto and Ricotta Pasta

Bahan-bahan (6 porsi)

• 1 large head of broccoli, roughly chopped
• 1/2 cup fresh basil
• 1/2 cup grated parmesan cheese
• 1/4 cup extra virgin olive oil
• kosher salt
• 1 pinch crushed red pepper flakes
• 3/4 pound of your favorite pasta
• 1 tablespoon salted butter
• 1 medium shallot, thinly sliced
• zest and juice of 1 lemon
• black pepper
• 1 cup whole milk ricotta cheese, whipped in the food processor, if desired