Creating these delicious Pumpkin & Gouda Stuffed Shells is simpler than you might think! Follow these step-by-step instructions to achieve perfection:

1. Preheat Oven: Start by preheating your oven to 375°F (190°C). Prepare a baking dish by greasing it lightly.
2. Cook Pasta: Boil a large pot of salted water and cook the pasta shells according to package instructions, making sure not to overcook them. Drain and set aside to cool.
3. Prepare the Filling: In a bowl, mix together the pumpkin puree, Gouda cheese, ricotta cheese, Parmesan cheese, garlic powder, nutmeg, chopped sage, olive oil, salt, and pepper until combined.
4. Stuff the Shells: Carefully stuff each cooked pasta shell with the pumpkin and cheese mixture. Place them in the greased baking dish.
5. Make the Alfredo Sauce: In a saucepan over medium heat, melt the butter. Allow it to brown slightly before adding the heavy cream. Stir in the remaining sage and cook until the sauce thickens. Season with salt and pepper.
6. Combine: Pour the brown butter sage alfredo sauce over the stuffed shells, making sure to cover them evenly.
7. Bake: Cover the baking dish with aluminum foil and bake for 20 minutes. Remove the foil and cook for an additional 10-15 minutes until bubbly and golden.

These streamlined steps ensure that you end up with a stunning and mouthwatering dish that highlights the fantastic combination of pumpkin and Gouda.