The time to roast frozen vegetables in an oven varies depending on the type of vegetable, but generally takes 15-30 minutes at 400-450°F.
Frozen vegetables offer a convenient way to make nutritious meals on the go, and they taste fantastic in soups and stews.
Roasting frozen vegetables is an effortless way to transform them into delicious, crispy-brown treats without needing to thaw them first!
To prevent burning and the release of carcinogenics into the air and food, the solution is to use a high smoke point oil like coconut or avocado oil. This will keep the oil from burning and releasing harmful carcinogens into your food and air!

How to Roast Frozen Vegetables
Prep the Vegetables
With just a few easy steps, frozen vegetables can be crisp and flavorful without even needing to thaw out first.
Step #1: Preheat the baking sheet to expedite the cooking process and allow your vegetables to roast quickly once they hit the pan.
Temperature also helps evaporate moisture that may build up on frozen vegetables during preparation.
Before baking your frozen veggies, drizzle them with olive oil or a flavorful vegetable oil such as coconut. Doing this will help the veggies cook evenly while infusing them with delicious flavors.
Preheat the Oven
If you want to roast frozen vegetables instead of steaming them in a bag or the microwave, your oven must be preheated before adding your vegetables for optimal results.
Be sure to fully preheat your oven before inserting your veggies for optimal results.
Without preheating the oven, vegetables will cook too quickly and become mushy rather than crispy.
To achieve this result, preheat your oven to 450 degrees Fahrenheit and place a baking sheet inside for additional heat.

Spread the Vegetables Out
Frozen vegetables offer a convenient and cost-effective way to add more veggies into your diet, since they’re usually flash frozen at peak ripeness. Plus, unlike canned veggies which lose some nutritional value over time, frozen veggies don’t lose their quality over time.
They’re an ideal way to save time on thawing and prep work, since they come already peeled and cut. So when it’s time for roasting vegetables, just grab them from the freezer and get ready for dinner in no time!
One essential tip when roasting frozen vegetables is to spread them out on the baking sheet. Otherwise, they’ll steam and become soggy.
That is why using a large baking sheet is recommended: this way you can evenly heat each vegetable without risk of steaming or sogginess.
Don’t Overcrowd the Vegetables
Overcrowding vegetables on a sheet pan often results in soggy results. This is because when they’re packed tightly together, they cannot breathe and release moisture that evaporates as steam.
To avoid this issue, arrange your vegetables on a single layer on the pan. It’s okay if they overlap but make sure they don’t touch or are stacked next to one another.
Oil the Vegetables
To effectively roast frozen vegetables, coat them in a thin layer of cooking oil such as olive or coconut oil. This will help them crisp up evenly and add an extra layer of flavor to your veggies.
Prior to beginning to cook, it’s essential to preheat your oven and roasting sheet to 450 degrees Fahrenheit. This high temperature helps evaporate any moisture quickly so your veggies cook quickly and evenly.
Cooking spray and actual oil both work, but I prefer using actual oil. Not only will this impart your veggies with extra flavor, but it’ll keep them from sticking together during preparation as well.
Season the Vegetables
Seasoning vegetables for roasting is key to achieve a crisp, caramelized texture. Salt draws moisture out of vegetables while helping draw out sugars to create an browned exterior, and other spices can add additional flavor.
Oil is an ideal addition to roasted vegetables; it helps keep them moist and accelerates the caramelization process. Use just enough oil so your veggies have a glossy, glistening coat but not so much that they’re swimming in it.
If desired, sprinkle the roasted vegetables with herbs or citrus zest during the cooking process. This will keep the flavors from burning and give them a vibrant fresh taste that’s sure to please.
Roasting Frozen Vegetables: How Long Does It Take?
Roasting frozen vegetables is a simple and convenient way to prepare a delicious side dish.
To roast frozen vegetables, preheat the oven to 450°F and toss the frozen vegetables in olive oil, salt, and pepper. Spread the vegetables in a single layer on a hot baking sheet and roast for 15 minutes before stirring them.
Depending on the type of vegetable, roasting times can range from 15-30 minutes. It is important to preheat the pan before adding the frozen vegetables as this helps them cook quickly and maintain their texture.
Roasting frozen vegetables is an easy way to enjoy a tasty side dish without having to thaw them first.

How Do You Make Frozen Vegetables Crispy?
Frozen vegetables make an excellent addition to meals when fresh produce isn’t available. Not only are they convenient, but they’re also packed with essential vitamins and minerals.
Budget-conscious consumers will love that these vegetables are available year-round, unlike some seasonal veggies. Furthermore, they’re easy to prepare and suitable for those on special diets.
Is it Possible to Make Frozen Vegetables Crisp Without Defrosting?
Roasting frozen vegetables is a quick and easy way to get delicious browned veggies without needing defrosting first. Though this method takes more time than steaming or microwaving, the end results are worth all the effort – healthy alternatives that everyone will love!
To achieve the ideal crispiness, make sure your pan is hot before adding frozen vegetables. Otherwise, they’ll steam instead of roasting and won’t have the browned bits that make roasted vegetables so delicious.
Start by preheating your oven to 400 degrees before adding frozen vegetables to a baking sheet. For easier cleanup, line the sheet with parchment paper before adding the veggies.
Spread your frozen vegetables evenly onto a sheet pan, leaving room between each one if possible. Doing this helps the veggies brown evenly and prevents them from clumping together and steaming instead of roasting.
Once your veggies are on the pan, roast them for 25 minutes or until slightly browned at the edges and cooked through. You may need to flip them over several times during cooking.