Frozen Roasted Green Beans Recipe

A sheet-pan of roasted green beans

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5 from 1 review

Frozen roasted green beans are simple side dish that's really easy to cook, as long as you follow a few helpful tips. 


Units Scale
  • 1 16-ounce bag frozen whole green beans
  • 2 tablespoons oil (vegetable oil, avocado oil or olive oil)
  • 1/4 teaspoon salt, plus more to taste
  • 1/4 teaspoon garlic powder (optional)


  1. Preheat oven to 400F.
  2. Line two sheet-pans with parchment or silicone baking mats. The parchment/silicone will prevent the beans from sticking to the pan. Using two pans allows for enough space on the pans so the beans aren’t crowded. 
  3. Take the green beans out of the freezer and immediately spread them out evenly in a single layer on two sheet-pans. Be careful not to dump a lot of loose ice out onto the sheet-pan. 
  4. Roast the frozen green beans for 5  minutes. 
  5. Take the sheet-pans out of the oven and toss the defrosted beans with oil. Season with salt. Garlic powder is optional. 
  6. Roast 5 minutes more. 
  7. You can roast the green beans longer if you want but be careful - they can quickly turn shriveled and dry.
  8. Add more salt to taste. Serve immediately. 


Frozen Cut Green Beans

Frozen whole green beans roast better than frozen cut green beans, which are smaller and fatter and hold more moisture. If you must roast frozen cut green beans, I've found that it's best to defrost them first to remove some moisture. Put the frozen cut green beans in a large microwave-safe or glass dish filled with 1-inch of water. Microwave for 20 seconds. This will defrost the beans without drying them out. Drain off the water and spread the beans out on a lint-free dish towel. Pat the beans dry.  Toss the green beans in oil and season with salt. Spread the beans out on a baking sheet, leaving space between the beans. Roast for 10 minutes. Add more salt to taste. Serve immediately. 

What other methods can be used to bake frozen green beans?  

Instead of roasting frozen green beans on a sheet-pan, you can put the frozen beans in a small baking dish. Add a generous amount of butter or olive and season with salt. Bake for about 12 minutes, until the beans are soft and warm. This will make roasted green beans that have a softer, less crispy texture. However, they are also less likely to dry out, which is a plus. 

Seasoning for Frozen Green Beans

Add more flavor to the green beans with one of these seasonings: very finely grated parmesan cheese, black pepper, garlic powder, onion powder, Italian seasoning, Red pepper flakes, freshly chopped dill or parsley, lemon zest or lemon juice.