Quick Parmesan Garlic Frozen Roasted Green Beans

Quick Parmesan Garlic Frozen Roasted Green Beans are an easy and flavorful side dish made with just a handful of ingredients. Tossed in parmesan, garlic, and Italian seasoning, these green beans are ready in under 20 minutes. Perfect for busy weeknights, no thawing needed, and they can be roasted in the oven or air fryer.

Roasted green beans on a plate.

These quick parmesan garlic frozen roasted green beans are crispy, cheesy, and packed with flavor — the perfect easy side dish for busy nights. With just a few simple ingredients like parmesan, garlic powder, and Italian seasoning, you can turn frozen green beans into a golden, savory side in under 20 minutes.

I love that there’s no need to thaw the beans ahead of time. You can grab them straight from the freezer and have a tasty, veggie-filled dish ready fast. They get perfectly roasted with those crispy edges that make them so yummy, and the air fryer version makes them even quicker.

Being able to use frozen green beans saves me so much time and stress. I love keeping a few bags in the freezer so I can easily add a green side dish to dinner without any planning. I was honestly elated the first time I made them and saw how much my family loved them — they disappeared off the pan in minutes!

What’s the difference between green beans and string beans?

Green beans and string beans are basically the same vegetable. Back in the day, “string beans” had a tough string down the seam that needed to be removed before cooking. Nowadays, we mostly just say “green beans” because newer kinds don’t have those strings. So, they’re pretty much the same thing, just with different names.

Why You’ll Love This Frozen Green Beans Roasted with Parmesan Recipe

  • Quick and Easy: No thawing required, just toss frozen green beans with simple ingredients and roast in under 20 minutes.
  • Minimal Ingredients: Just parmesan, garlic powder, Italian seasoning, and a few pantry staples for maximum flavor.
  • Versatile Side Dish: Pairs perfectly with a variety of main dishes, from chicken to pasta.
  • Air Fryer Option: Includes instructions for an even faster, crispy air fryer version.
Roasted green beans in a pan.

Ingredients & Substitutions

Here is everything you need to make the best-tasting roasted green beans:

Frozen Green Beans: I recommend using whole or cut green beans for the best texture. Avoid using French cut frozen beans. With French green beans, the thinner green bean will cook faster than the thicker pieces. You can also use fresh green beans instead of frozen. Blanch them before using them for a similar texture.

Light Olive Oil: Virgin olive oil, extra virgin olive oil, avocado oil, vegetable oil, or melted butter can be used instead of light olive oil.

Garlic Powder: Fresh minced garlic can be used as a substitute. Use one clove of fresh garlic for every 1/2 teaspoon of garlic powder.

Italian Seasoning: You can make your Italian seasoning blend using dried herbs such as basil, oregano, thyme, and rosemary. You can also use fresh herbs.

Onion Powder: Finely minced fresh onion or onion flakes can be used instead of onion powder. Use about one tablespoon of minced onion for every teaspoon of onion powder.

Parmesan Cheese: Any hard, grated cheese like Pecorino Romano or Asiago can be used instead of Parmesan cheese. Finely grated parmesan cheese works best. But you can also finely shred it from a block of parmesan cheese using a zesting grater.

Salt: You can use any salt you have on hand, including sea salt, kosher salt or flaky sea salt.

Roasted green beans in a pan.

How to Make My Quick Parmesan Garlic Roasted Frozen Green Beans Recipe

Here are easy, step-by-step instructions for the best way to make this green bean simple side dish:

Step 1: Toss the Green Beans

Preheat your oven to 425°F (220°C).

In a large bowl, mix together 2 tablespoons of light olive oil, 2 teaspoons of garlic powder, 1 teaspoon of Italian seasoning, 1 teaspoon of onion powder, 1 teaspoon of salt, and a dash of black pepper.

Add 14 ounces of frozen green beans (being careful to remove any excess ice) to the bowl and toss them in the seasoning mixture until they are well coated. Sprinkle 1/4 cup of grated Parmesan cheese evenly over the green beans.

Spread the green beans out in a single layer on a baking sheet lined with parchment paper.

Adding seasonings to olive oil in bowl.
Adding parmesan cheese to bowl of green beans.

Step 2: Roast the Green Beans

Roast the green beans in the preheated oven for about 20 minutes, or until they are crispy on the outside and tender on the inside, stirring halfway through cooking.

Serve the roasted green beans hot as a delicious and healthy side dish. Enjoy!

Spreading roasted green beans in a pan.

How to Roast Frozen Green Beans in an Air Fryer

Place the seasoned green beans in the air fryer basket in an even layer.

Cook the green beans in the air fryer for about 10-12 minutes, shaking the basket halfway through cooking, until they are crispy on the outside and tender on the inside.

Sprinkle 1/2 cup of grated Parmesan cheese evenly over the green beans and cook for an additional 1-2 minutes, or until the cheese is melted and bubbly.

Roasted green beans on a plate.

My Expert Recipe Tips

Green Bean Texture: You do not need to thaw the green beans. Pull them out of the freezer right before they get tossed in the seasoning. For extra crispy green beans, you can adjust the roasting time and cook the green beans for a few minutes longer. Be careful not to overcook them, as they can become mushy and can burn.

Fresh Green Beans: If using fresh green beans, blanch them in boiling water for a few minutes before tossing them in the seasoning mixture and roasting them in the oven.

Seasoning Adjustments: Feel free to adjust the parmesan green beans seasoning quantities to suit your taste. You can also add other herbs and spices, such as red pepper flakes or smoked paprika, for additional flavor.

Delicious Serving Suggestions

You can add other ingredients to the green beans before roasting, such as sliced almonds, bacon bits, cherry tomatoes, a drizzle of lemon juice, or some lemon zest, to create different flavor profiles.

Frequently Asked Questions

I store leftovers in an airtight container in the fridge for up to 3 days. They stay crisp if you reheat them in the air fryer or oven, which brings back that roasted texture without getting soggy.

Yes! That’s actually my favorite way—they turn out so crispy and flavorful. Just spread the frozen beans in a single layer, air fry at 400ºF for 10–12 minutes, and give them a shake halfway through.

Nope—straight from the freezer is perfect. No thawing needed! The roasting process removes the excess moisture and gives you crispy, caramelized edges without any extra steps.

I keep it simple with garlic powder, grated parmesan, Italian seasoning, and a drizzle of olive oil. If you want to add a little kick, sprinkle in crushed red pepper or lemon zest for brightness.

You totally can! Just reduce the cooking time slightly. Fresh green beans roast faster, so keep an eye on them around the 12–15 minute mark for that same crispy-tender texture.

Yes—just make sure your parmesan and seasoning blends are gluten-free (some do sneak in additives). I use plain spices and real parmesan, so it’s an easy gluten-free side dish win.

Roasted green beans on a plate.

Quick Parmesan Garlic Frozen Roasted Green Beans

Gluten-Free diet-friendly recipe
Quick Parmesan Garlic Frozen Roasted Green Beans are an easy and flavorful side dish made with just a handful of ingredients. Tossed in parmesan, garlic, and Italian seasoning, these green beans are ready in under 20 minutes. Perfect for busy weeknights, no thawing needed, and they can be roasted in the oven or air fryer.
5 from 10 votes
Servings 6
Prep Time 5 minutes
Cook Time 20 minutes
Total Time 25 minutes

Ingredients
  

  • 14 ounces frozen green beans
  • 3 tablespoons light olive oil
  • 2 teaspoons garlic powder
  • 1 teaspoon Italian seasoning
  • 1 teaspoon onion powder
  • 1 teaspoon salt
  • dash pepper
  • 1/4 cup grated parmesan cheese

Instructions
 

  • Preheat your oven to 425°F (220°C).
    In a large bowl, mix together 2 tablespoons of light olive oil, 2 teaspoons of garlic powder, 1 teaspoon of Italian seasoning, 1 teaspoon of onion powder, 1 teaspoon of salt, and a dash of black pepper.
    Add 14 ounces of frozen green beans (being careful to remove any excess ice) to the bowl and toss them in the seasoning mixture until they are well coated. Sprinkle 1/4 cup of grated Parmesan cheese evenly over the green beans.
    Spread the green beans out in a single layer on a baking sheet lined with parchment paper.
  • Roast the green beans in the preheated oven for about 20 minutes, or until they are crispy on the outside and tender on the inside, stirring halfway through cooking.
    Serve the roasted green beans hot as a delicious and healthy side dish. Enjoy!

How to Roast Frozen Green Beans in an Air Fryer:

  • Place the seasoned green beans in the air fryer basket in an even layer.
    Cook the green beans in the air fryer for about 10-12 minutes, shaking the basket halfway through cooking, until they are crispy on the outside and tender on the inside.
    Sprinkle 1/2 cup of grated Parmesan cheese evenly over the green beans and cook for an additional 1-2 minutes, or until the cheese is melted and bubbly.

Video

Notes

Green Bean Texture: You do not need to thaw the green beans. Pull them out of the freezer right before they get tossed in the seasoning. For extra crispy green beans, you can adjust the roasting time and cook the green beans for a few minutes longer. Be careful not to overcook them, as they can become mushy and can burn.
Fresh Green Beans: If using fresh green beans, blanch them in boiling water for a few minutes before tossing them in the seasoning mixture and roasting them in the oven.
Seasoning Adjustments: Feel free to adjust the parmesan green beans seasoning quantities to suit your taste. You can also add other herbs and spices, such as red pepper flakes or smoked paprika, for additional flavor.

Nutrition

Calories: 64kcalCarbohydrates: 6gProtein: 3gFat: 4gSaturated Fat: 1gPolyunsaturated Fat: 0.4gMonounsaturated Fat: 2gCholesterol: 4mgSodium: 465mgPotassium: 167mgFiber: 2gSugar: 2gVitamin A: 498IUVitamin C: 8mgCalcium: 69mgIron: 1mg
Keyword garlic green beans, green beans, parmesan cheese
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Dietitian Reviewed and Endorsed logo

This recipe has been reviewed by a healthcare professional for its nutritional balance and alignment with healthy eating principles.

15 Comments

  1. Hi would you mind letting me know which web host you’re utilizing? I’ve loaded your blog in 3 completely different browsers and I must say this blog loads a lot quicker then most. Can you suggest a good hosting provider at a reasonable price? Many thanks, I appreciate it!

  2. Yes, this side dish was amazing. Not one left,big hit at dinner. I added onions ( big man like it ) elevated even more. Great job N. Bonilla. Just delicious, blended well with my roasted chicken. Thank you!?

  3. These were sooo amazing! I have a giant bag of skinny frozen green beans from Costco that I had NO idea what to do with…now I could easily eat the entire bag this way! Thank you for the recipe! My kids loved them as well. Followed your recipe exactly, except I only baked the beans for 13ish minutes because they are super thin, and they were perfect. Will be making again!

    1. Hi Sus, thank you so much for sharing this with me!! I feel the same way 🙂 I was so happy to find a last minute and delicious way to add green beans to our meals that are so easily stored in the freezer!

5 from 10 votes (4 ratings without comment)

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