Roasted Frozen Green Beans in Oven

Forget soggy frozen green beans. With my foolproof technique, you’ll have perfectly caramelized and flavor packed roasted green beans every time without having to buy them fresh. No one will even know you started from frozen.

Growing up in the South, green beans have always been a staple side dish. Needless to say, I’ve made a lot of green beans in my life. Making them for over 30 years has taught me the difference in roasting time needed between soggy and caramelized.

I know you’re thinking, “Can frozen green beans be roasted?” and the answer is YES! With my foolproof method, you’ll turn a simple bag of frozen green beans into a side dish your family will request over and over, even the picky eaters!

You have to trust me on this one; the key is in the roasting time. It’s well worth the wait! It’s going to mean the difference between a soggy pan of green beans and a caramelized delicious one. When they’re done, you’ll have the perfect balance of busy life shortcut and a homecooked side.

Green beans basically go with anything, but I love serving them up with French Onion Meatballs or Honey Garlic Chicken. They’re such an easy side dish for weeknight dinners.

String beans vs. Green beans

Green beans and string beans are actually the same things! So if you see frozen string beans, you are safe to buy that kind. 

The name string bean is actually somewhat outdated. It refers to the thin, fibrous “string” that used to run down the length of the pod and that had to be removed by hand, bean by bean, like snap peas. Also known as snap beans.

But in the 19th century, these strings were eliminated thanks to careful breeding, according to Serious Eats. These days, only heirloom varieties contain strings. 

You may also see thin green beans (also called haricots verts) which are a French style of green beans. These work great as well!

Why You’ll Love This Frozen Green Bean Recipe

This green bean recipe is so good. Here’s you’ll come back to it again and again:

• Roasted frozen green beans are quick and easy. Rip open the bag, season, bake, and voila!
• Kids love green beans. Sometimes we serve them with dipping sauce for “green fries”.
• Frozen veggies are budget-friendly. They’re a great way to save money.
• Frozen green beans won’t go bad as quickly as fresh ones, so you’ve always got a great veggie dish ready to go in the freezer.

Frozen Green Beans Recipe Ingredients

Frozen green beans seem like they’d be enough on their own, but they’re actually even better with some light seasonings. Here’s what you’ll need to grab from your pantry to make these

• frozen green beans – You can use any frozen green bean for this, including the steamable kind. However the steamable bags come in special packaging and may cost more, so keep an eye out. 
• avocado oil – You can use sesame oil, olive oil, or vegetable oil instead. I like avocado oil because it has a neutral taste. You can even melt butter in place of the oil. Just use the melted butter the same way as the oil.  
• coarse kosher salt – You can use coarse sea salt instead. Stay away from table salt though — it is much better for seasoning a finished dish than for cooking. 
• ground black pepper – I like to use this pepper grinder for cooking. Fresh pepper makes a huge difference in flavor. 
• garlic powder & onion powder – make sure they aren’t expired for the best taste. Most spices need to be replaced after 6 months.

If you prefer, you can use a seasoning salt like Lawry’s or Krazy Jane’s instead of the salt, pepper, garlic, and onion powders. Italian seasoning will give it great flavor as well.

How to Cook Frozen Whole Green Beans

(The full printable recipe card with measurements and full details are at the bottom of this post)

Here’s how to cook these frozen green beans in the oven. 

1. First, preheat the oven to 425ºF. Line a baking sheet with parchment paper. You can also use a silicone baking mat.
2. Add the green beans to a mixing bowl. Add the oil, salt, pepper, garlic powder, and onion powder. Stir well until it’s well combined and the beans are well-coated. 
3. Then spread out the green beans on the baking sheet in a single layer. Place in the oven and bake for 30 minutes. 
4. Remove from the oven and enjoy straight away. 

Frozen Green Bean Recipe Tips and Tricks

Green beans deserve salt, pepper, and seasonings to help bring out their flavor. Don’t under season them. The seasoning for frozen green beans in this recipe is simple and easy to make with items you probably already have on your spice rack.

Green beans can easily be undercooked. You want them to have time to roast out the extra water that is captured when they are frozen.

If you want to check for doneness, use a pair of tongs to fish out a green bean from the pan. Let it cool slightly, then take a bite. It should be mostly soft with a slight crispness. If it is crunchy, it needs more time.

Storing leftover Roasted Frozen Green Beans

Allow the green beans to cool completely. Place them in an airtight container in the fridge for up to 5 days. 

What to serve with this Roasted Frozen Green Beans Recipe

Green beans make a wonderful side dish for so many recipes. 

One of my favorites is as a green veggie to go with any kind of meat and potatoes. Whether it’s steak and baked potatoes, crispy fried pork chops, or lemon chicken and mashed potatoes. 

Try them with an Asian dish like orange chicken or beef teriyaki. 

Green beans also work well with fish dishes. This baked lemon butter salmon can be cooked in foil in the oven alongside your veggies. 

Reheating Frozen Green Beans in Oven

Once you have made this recipe, they are best reheated on the stovetop. I recommend using a large skillet. 

You may use a drop of oil if your pan is dry, but the beans should have retained the seasoning and should be moist enough on their own.  

Cook the beans over medium heat, pushing the beans around with a silicone spatula, until heated through, about 5 minutes.

An alternative method would be to use your air fryer. Place the beans in the air fryer basket and heat at 350°F until heated through.

Toppings to add to Roasted Frozen Green Beans

While frozen roasted green beans are a perfect side dish on their own, next time try adding some toppings. Some great ones include:

• almond slivers
• balsamic vinegar
• pat of butter
• fresh parsley
• feta cheese
• red pepper flakes
• parmesan cheese
• lemon juice

Frozen Green Beans FAQs

products I used to make frozen green beans in the oven

baking sheet

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parchment paper

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measuring spoons

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mixing bowls – stainless steel

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tongs

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More Veggie Recipes

• Oven Roasted Broccoli
• Instant Pot Green Bean Casserole
• Sauteed Butternut Squash
• Oven Roasted Garlic Brown Sugar Carrots
• Roasted Spaghetti Squash
• Honey Roasted Vegetables with Cranberries and Pecans
• Sauteed Asparagus

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