Roasted Frozen Green Beans

4.43 from 272 votes

Learn how to cook frozen green beans that actually taste delicious! Simple parmesan roasted green beans recipe.

roasted green beans with parmesan on a baking sheet
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Frozen roasted vegetables are one of my very favorite things.

Have a bag of frozen cut green beans laying around and wondering what to do with them?

Well, green beans aren’t just for green bean casserole.

You can make parmesan roasted green beans in the oven using frozen green beans.

This simple side dish is so flavorful and makes a wonderful side dish!

What is the best way to cook frozen vegetables?

Roasting seems to be the best way to cook most any type of frozen vegetable.

Roast at high heat (over 400 degrees), add in olive oil and simple spices like salt, pepper, garlic powder, and onion powder, and it is a recipe for success.

I already have recipes for roasted frozen cauliflower, frozen corn, roasted frozen carrots , roasted frozen brussel sprouts, and frozen roasted broccoli that we make all the time.

Roasted green beans were naturally my next experiment!

Spoiler alert: it was so delicious just like the other frozen vegetable recipes.

roasted frozen green beans on a baking sheet

How to cook frozen green beans in the oven

Step 1: Preheat the oven to 450 degrees. High heat is important for getting the right texture when roasting anything that is frozen.

Do you thaw frozen green beans before cooking?

Which brings us to one very important thing to note – I do not recommend thawing your frozen green beans before cooking.

I have found the key to the best texture when working with frozen vegetables is to put them straight from the freezer onto the pan, and roast immediately.

When you allow the vegetables to thaw, that is when the mushy texture happens.

roasted frozen green beans on a baking sheet

Step 2: Once the oven is preheated, take the frozen cut green beans out of the freezer, and toss with olive oil.

Add the salt, garlic powder, onion powder, then toss again to combine.

What spices go well with green beans?

Simple spices work well with just about any vegetables. You cannot go wrong with the basics – salt, pepper, onion powder, garlic powder.

If you want a spicy kick, you could add a pinch of paprika.

Step 3: Place the green beans on a baking sheet and roast at 450 degrees for 15 minutes.

Step 4: Stir the green beans. Sprinkle the parmesan over the top of the green beans and leave it, do not stir again yet.

What kind of parmesan cheese to use

I used the small powdery fresh parmesan that is located in the cheese section.

It looks similar to the kind of parmesan you use for spaghetti.

Either will work, but I do not recommend the long shreds of parmesan for this recipe.

The small pieces work so well to distribute the crispy texture of parmesan edges on the green beans.

Step 5: after 15 minutes, you can stir again.

From here, roast the green beans until they are the desired texture, anywhere from 5- 15 more minutes depending on your oven and type of sheet pan. Some cook faster than others.

roasted frozen green beans on a baking sheet

The crispy parmesan bits on the green beans made the flavor incredible!

How to reheat cooked frozen green beans

Surprisingly, these were even fantastic reheated! I was a bit surprised but the flavor and texture was still spot on.

Simply reheat any leftovers in the microwave until hot.

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roasted green beans with parmesan on a baking sheet
4.43 from 272 votes

Roasted Frozen Green Beans

By: Joy Shull
How to cook frozen green beans that actually taste delicious! Easy parmesan green beans recipe in the oven.
Prep: 5 minutes
Cook: 40 minutes
Total: 45 minutes
Servings: 6

Ingredients 

  • 20 oz frozen cut green beans, do not thaw
  • 2 tablespoons olive oil
  • 1 teaspoon salt
  • 1 teaspoon garlic powder
  • ½ teaspoon onion powder
  • fresh ground black pepper, optional
  • 1 cup parmesan cheese

Instructions 

  • Preheat oven to 450 degrees. Do not remove the green beans from the freezer until the oven is ready to cook.
  • Toss the frozen cut green beans with olive oil. Add the garlic powder, salt, onion powder, and optional black pepper and toss again to combine
  • Spread the green beans out in an even layer on a baking sheet
  • Roast at 450 degrees for 15 minutes, then stir them around.
  • Sprinkle the parmesan cheese over the tops of the green beans but do not stir it in.
  • Roast for an additional 15 minutes, then stir the green beans.
  • From here, roast until the desired crispy edges are achieved, around 5 – 15 minutes

Notes

To reheat these beans after cooking, simple toss them in the microwave until hot. The flavor is still amazing even reheated!

Nutrition

Calories: 138kcal, Carbohydrates: 8g, Protein: 8g, Fat: 9g, Saturated Fat: 3g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 5g, Cholesterol: 11mg, Sodium: 661mg, Potassium: 222mg, Fiber: 3g, Sugar: 3g, Vitamin A: 782IU, Vitamin C: 12mg, Calcium: 234mg, Iron: 1mg
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5 Comments

  1. This is THE way to serve green beans as a side.
    It’s actually quite difficult to get perfect, as you have to ‘move it in’ to your oven/pan/etc.
    Well worth the effort. I’m on my third try, tonite.
    One thing i’ve learned: don’t try to scale down. This is a process that works better at a certain minimum scale, kinda like malting barley.
    Don’t worry about wastage. These beans are soooo good, they won’t be neglected.

  2. I’ve cooked this twice now, and people have complimented me both times on how tasty it is! I usually add pre grated garlic, onion flakes, and bacon bits instead of salt, but seriously thank you for a simple recipe for me to work with 🙂

      1. delicious. they adding balsamic vinegar, grape tomatoes and mozzarella pearls after roasting. Also delicious.

  3. I loved the green beans. Unfortunately my oven cooked faster. Next time I will cook less time. I did use Parmesan shreds. Next time I will use the grated Parmesan. It was delicious. I could have eaten all of the green beans.