Heat the olive oil in a skillet over medium heat, then add the finely chopped onion. Sauté until translucent and fragrant, about 3-4 minutes.
1 1/2 cups Arborio rice
Add the minced garlic and ground cinnamon to the skillet, cooking for another 30 seconds until the garlic is fragrant.
1 1/2 cups Arborio rice
Transfer the sautéed onion and garlic mixture to the slow cooker, then add the Arborio rice and pumpkin puree. Stir to combine everything evenly.
1 1/2 cups Arborio rice
Pour in the warm vegetable broth, then season with salt and pepper to taste. Cover and cook on low for about 2 hours, stirring once halfway through to promote even cooking.
1 1/2 cups Arborio rice
After cooking, the rice should be tender and creamy. Stir the risotto gently to incorporate the flavors and check the consistency, adding more broth if it seems too thick.
Finish by stirring in grated Parmesan cheese if desired, adding a final creamy richness to the dish.
1 1/2 cups Arborio rice
Serve the pumpkin risotto hot, garnished with a sprinkle of extra Parmesan or fresh herbs for a cozy, fall-inspired meal.