Return the dish to the oven, uncovered, and bake for another 10–15 minutes, stirring once halfway through if you like, until the pasta is fully tender and the sauce has thickened into a creamy coating. The top should have a few golden spots, and the peas will be bright green.
Remove the dish from the oven and let the pasta rest for about 5 minutes. The sauce will continue to thicken slightly as it cools. If it looks too thick, you can loosen it with a splash of warm broth or hot water and stir gently.
Taste and adjust seasoning with a bit more salt and pepper if needed. Sprinkle with a little extra grated Parmesan before serving, and bring the dish straight to the table so everyone can scoop out their own portion.
Variations & Tips
For a lighter version, you can swap half of the heavy
