Pasta shells, a white sauce you don't rush, peas, whatever cheese is in the door of the fridge, breadcrumbs on top. 180°C / 350°F until it's bubbling at the edges and hot in the middle. Check the middle.
A splash of milk in the sauce. Curtis says more. We have discussed this since 2019.
If it was a bad Tuesday, tell me. You don't have to say why.