Gnocchi Ubi Jalar dengan Brokoli Rabe dan Saus Mentega Bawang Putih Sage

Bahan-bahan (6 porsi)

• One 1-lb sweet potato
• 1 cup whole milk ricotta cheese
• 1/4 cup Parmesan cheese
• 1 1/2 teaspoons salt
• 1 1/4 cup flour (more for dusting)
• 5 cups finely chopped broccoli rabe (stems, leaves, and florets) – optional
• 8 tablespoons butter
• 1/3 cup heavy cream
• 2 cloves garlic, minced
• 5 -6 sage leaves
• 1 teaspoon sea salt
• 1/4 cup Parmesan cheese