Ingredient:

• 2 tablespoons extra-virgin olive oil
• 1 medium red onion, chopped
• 1 small (2 pounds) butternut squash or 2 sweet potatoes, peeled and diced into ½” cubes
• 1 teaspoon salt, divided, more to taste
• Pinch of red pepper flakes
• 4 cloves garlic, pressed or minced
• 1 ½ cups steel-cut oats
• 2 packed cups chopped kale, ribs removed (about ½ bunch)
• ½ cup dry white wine*
• 6 cups water
• ¾ cup (1 ¾ ounces) freshly grated Parmesan cheese
• 2 tablespoons butter
• 1 tablespoon lemon juice
• Freshly ground black pepper, to taste