Cavatelli and Broccoli

Ingredients

• 2 pounds broccoli crowns — cut into bite-size florets
• 1/4 cup extra virgin olive oil — divided
• 1 teaspoon kosher salt — divided, plus additional to taste
• 1/4 teaspoon black pepper — plus additional to taste
• 15 ounces cannellini beans — or similar white beans, such as great Northern
• 8 ounces cavatelli — or other tube-shaped pasta
• 1 lemon zest medium, and juice
• 1/2 teaspoon freshly ground black pepper
• 1 cup part skim ricotta cheese — about 7.5 ounces
• 1/4 cup grated Parmesan cheese — plus additional for serving
• 1/4 teaspoon red pepper flakes — plus additional to taste