Butternut Squash, Sausage, and Kale Gnocchi

Ingredients

• 1 pound Italian sausage ((hot or mild))
• 2 tablespoons unsalted butter
• 3 tablespoons olive oil
• 1 small butternut squash ((peeled and diced, about 2 1/2 cups))
• 1/2 teaspoon red pepper flakes ((optional, plus more for garnish))
• 1 bunch lacinato kale ((chopped, about 3 cups))
• 1 tablespoon fresh sage ((chopped))
• 1/2 tablespoon fresh thyme ((chopped))
• 1/4 teaspoon kosher salt
• 1/4 teaspoon black pepper
• 4 cloves garlic ((minced))
• 3 tablespoons shallots ((minced))
• 1 pound gnocchi ((shelf-stable variety))
• 1 cup chicken broth
• Freshly grated Parmesan cheese (for serving)