Help! Frozen straight to oven?

[Castlelough]

Hi, hoping somebody can advise quickly!

I have a LeCreuset oven dish that is also freezer safe. A few weeks ago I made a mince base for cottage pie and froze it in the dish. I want to put mash on top now and cook it for dinner.

Can I put mash on top of the frozen base and bung it in the
oven? And how long should I cook for at what temp?

[cdtaylornats]

Put it in the oven at 200 while you cook the potatoes, then once mash is ready pile it on, then 30 minutes at 200.

[LIZS]

Allow the dish to warm a little at room temp. Thermal shock could make it crack if it goes straight from freezer to oven.

[Castlelough]

Thanks ladies. It came out beautifully! :-)