Help! Is this casserole going to overflow in the oven?

[oopslateagain]

I have a cold and feel like crap, so tonight's tea has been re-jigged as a one-pot meal.

Basically I have put two bags of (opened!) boil-in-bag brown rice in a dish with some veggies, six pork chops on top, then added a tin of tomatoes and some made-up onion gravy mix with a bit of extra water (and some other seasonings too).

The mix comes up to within 1cm of the top of the dish.

It needs to be in the oven for about 45 minutes, but in my virus-addled brain, I can't figure out whether, when the rice absorbs the liquid, it's going to make the whole dish 'bigger' i.e. is it going to overflow? Or will the liquid level drop enough so it all stays in the pot?

I really don't want to have to make DH scrub the oven.

not sure, can you pop a tray either under it or on the shelf below incase ?

I've put the big oven tray under it, but if it overflows it's going to burn onto that and be a bugger for DH to get off.

I'm off to bed after tea anyway.

Surely the rice will just absorb the liquid, so the volume will stay the same? Bubbling may cause some spillage...

It survived! Exactly the same volume as the start.

Smells bloody lovely too.