I've never done frozen veggies because I just don't do frozen. But do you use high heat? Like 450 or 500? Defrost and dry the veggies thoroughly first?

Don't roast frozen veggies....anyone who says they do with no problem doesn't know what roasted vegetables should taste like.
Linda C

I've also never roasted frozen vegetables. The vegetables I roast are: potatoes, quartered onions, butternut and similar squashes, red and green peppers, garlic, eggplant.
None of these would come frozen, they must be fresh. I drizzle with olive oil and sprinkle with fresh thyme and black pepper.
Roast at around 400F for 40 minutes depending on how large are the pieces or until tender and lightly caramelized.
Always taste good.

SharonCb

I usually do thin asparagus or green beans, drizzle with a little EVOO, roast for about 10 or 12 minutes at most.

the only vegetable that I roast from frozen state is asparagus. It's not as good as freshly picked and roasted, but it's not bad if it's roasted nice and brown.

I haven't tried anything else from frozen, just the asparagus.

Annie

Ok, you are all making me feel much better -- I prefer fresh vegetables but am working on eating more locally and in season, so certain vegetables aren't always available -- I thought I was doing something wrong but it sounds like I should just stick with fresh in season and let it go!

I'm with you, blueiris, I tried to roast some chinese mixed blended bagged stuff tonite and got a simmering pile of mush!
I wouldn't recommend that to anyone!

I roast my home-frozen green beans with no problem. I thaw them, try to blot out as much water as I can from them, toss with a little olive oil, salt, and pepper. Then I put them on a roasting tray at around 425 for half an hour or so, tossing once or twice. I haven't tried roasting any other kinds of frozen veggies though...

Emily

I grill or roast my eggplant when it comes out of the garden and then freeze it. Tastes pretty good!

You're probably crowding the pan. I haven't tried it, but another poster said it's important to space them out. (the water needs room to evaporate) I have read mostly high temperatures-- in the neighborhood of 425.

I roast any or all root vegetables, but I haven't roasted summer squashes. Asparagus, broccoli and cauliflower, yes. I usually drizzle with EVOO and sprinkle a dried mixture of rosemary and garlic I have in a grinder and of course S&P.

jude

I think that if you have frozen vegetables on hand, you might as well try to roast them as cook them any other way --
I would thaw them and blot off as much water as possible, then toss with olive oil and kosher salt and roast at high heat. What have you got to lose, if you've already got the frozen vegetables?

I still buy frozen peas and corn, though -- and chopped spinach for recipes.

Frozen Brussel Sprouts roast very well.

Do NOT thaw them first!

Put the frozen sprouts in a pan that is big enough that they can be spread out, not touching each other.

Drizzle with just a tiny bit of Olive oil, and roast in a very hot (450 degree) oven until they just start to brown.

Very good that way.

Rusty

I just realized I told a lie!

I forgot that I do roast frozen asparagus while still frozen.

Drizzled with oil and with some parmesan grated over and roasted until turning colour.

SharonCb