Cook the spaghetti according to package instructions until al dente. Drain and set aside.

In a large skillet, heat olive oil over medium heat. Add minced garlic and sauté until fragrant, about 1 minute.

Add pumpkin puree, heavy cream, cinnamon, basil, salt, and pepper. Stir well and simmer for 5 minutes.

Add chopped kale to the skillet and cook until wilted, about 3-5 minutes.

Combine cooked spaghetti with the sauce and kale mixture. Toss to coat evenly.

Serve hot, optionally garnished with grated Parmesan cheese.