Frozen Vegetable Casserole Recipe - Practically Homemade (2024)

Jump to Recipe

THIS POST MAY CONTAIN AFFILIATE SALES LINKS. PLEASE SEE OUR FULL DISCLOSURE POLICY FOR DETAILS

Today I have a spin off of the original Green Bean Casserole. While the traditional version is fabulous, especially on a holiday {hello Thanksgiving!}, it is always a good idea to change things up. I have to admit that I hadn’t thought much about Green Bean Casserole until about a month ago when we were invited to a friend’s house for dinner. They served it with tri-tip and it was SO good. Of course, I couldn’t leave well enough alone and so I decided to come home and try to make a variation. Friends, it was a great idea because this Frozen Vegetable Casserole is delicious.

Do you love veggie side dishes? Try this BBQ Green Bean Casserole!

Frozen Vegetable Casserole Recipe - Practically Homemade (1)

The best part about Frozen Vegetable Casserole is that you can really customize it with whatever frozen vegetables you like or have on hand.

I stayed with Crispy French Fried Onions because you just can’t mess with some ingredients. However I did add Parmesan cheese and it was such a great addition.

Free Email Series

5 Secrets To The Perfect Cookie

Tips & tricks to achieve the most delicious cookies of your life!

Ingredients needed to make Vegetable Casserole

  • Frozen Vegetables-I like to use a combination of broccoli, cauliflower and country trio {which is corn, carrots and green beans}. The great part is that you can customize the veggies to whatever you and your family enjoy.
  • Cream of Mushroom Soup-using a canned cream soup gives the sauce of this casserole a fabulous flavor and creamy texture.
  • Sour Cream-adding a bit of sour cream to a casserole like this is always a good idea. It gives the sauce body and also a bit of tang.
  • Seasonings-salt, pepper and garlic powder is all that it needs.
  • Crispy Fried Onions-is a holiday vegetable even complete without a crispy onion topping? I don’t think so either!
  • Parmesan Cheese-to give the topping a bit more flavor and texture. I promise you that this is an ingredient you don’t want to miss.

Making your Frozen Vegetable Casserole

Assembling this casserole couldn’t be simpler which is one of the wonderful things about a casserole like this.

1. In a large bowl combine the bags of frozen vegetables together. I love that the country trio has green beans in it. That way there is still a nod to the original.

Frozen Vegetable Casserole Recipe - Practically Homemade (2)

2. Combine the cream of mushroom soup with the sour cream in a separate bowl. Add the pepper, salt and garlic powder. Stir until everything is evenly combined.

Pour the soup mixture, along with 3/4 of the jar of Crispy Fried Onions to the frozen vegetables. Adding crispy onions to both the filling and topping gives everything great flavor. Stir until everything is evenly combined and coated.

Pour the mixture into your baking dish that has been sprayed with nonstick cooking spray.

Frozen Vegetable Casserole Recipe - Practically Homemade (3)

3. Top the vegetable mixture with a hearty layer of Parmesan cheese. Making sure that it is evenly distributed over the top.

Frozen Vegetable Casserole Recipe - Practically Homemade (4)

4. The final step is to top with the rest of the Crispy Fried Onions. Bake in a 350 degree oven for 40 minutes or until the top is golden brown and the filling is bubbly.

Frozen Vegetable Casserole Recipe - Practically Homemade (5)

Recipe Variations:

Vegetables-use any kind of frozen vegetables that you love. You can also use fresh if you would rather. They will just need to be steamed in the microwave for a couple of minutes before using.

Soup-cream of mushroom soup is traditional but cream of chicken, cream of celery or even cheddar cheese soup would all work wonderfully.

Toppings-if Crispy Fried Onions and Parmesan Cheese aren’t something you like then try other items. Crushed Ritz crackers and shredded cheddar or even Panko bread crumbs with shredded pepper jack would be dreamy.

Frozen Vegetable Casserole Recipe - Practically Homemade (6)

Frequently Asked Questions:

Can I use fresh instead of frozen vegetables?

Absolutely! I would suggest steaming the fresh vegetables in the microwave for a couple of minutes before adding them to the casserole first.

This will soften them slightly and ensure that the fresh vegetables will cook through.

Can this Frozen Vegetable Casserole be made in the Crock Pot?

Yes, this Frozen Vegetable Casserole can be made in the Crock Pot! I love doing that on Thanksgiving because it saves me precious space in the oven.

Cook it on low for 4 hours and don’t forget the Crock Pot liner.

Can this Easy Vegetable Casserole be made ahead of time?

Yes, it can be made ahead of time which is so nice during holiday planning. Make this Vegetable Casserole the day before and bake as directed.

Frozen Vegetable Casserole Recipe - Practically Homemade (7)

Do you need good side dish ideas? Try these recipes…

  • Sweet and Yukon Potato Au Gratin
  • Easy Homemade Mac and Cheese
  • Harvest Salad with Apples
  • Roasted Melting Potatoes
  • Winter Salad with Roasted Butternut Squash
  • One Rise Crescent Rolls

Frozen Vegetable Casserole Recipe - Practically Homemade (8)

Frozen Vegetable Casserole Recipe

An updated version of the classic Green Bean Casserole, this version is made with Frozen Vegetables. The addition of Parmesan Cheese and sour cream give it an extra special flavor.

Course: Side Dish

Cuisine: American

Author: June Albertson-Dick

Prep Time: 10 minutes minutes

Cook Time: 40 minutes minutes

Total Time: 50 minutes minutes

Servings: 8

4.87 from 15 votes

Pin Print

Ingredients

  • 12 oz. bag frozen broccoli & cauliflower
  • 12 oz. bag frozen Country Trio {corn, carrots & green beans}
  • 2 cans cream of mushroom soup
  • 1/4 cup sour cream
  • 3/4 tsp black pepper
  • 3/4 tsp salt
  • 1/2 tsp garlic powder
  • 6 oz. container Crispy Fried Onions
  • 1/4 cup Parmesan Cheese

Instructions

  • Preheat oven to 350 degrees. In a large mixing bowl combine both bags of vegetables. Add cream of mushroom soup, sour cream, black pepper, salt, garlic powder and 4 oz. of crispy fried onions. Mix together, until everything is incorporated. Pour into a greased 9x13 rectangle baking dish {or large round baker}, top with Parmesan cheese and the remaining crispy fried onions. Bake for 40 minutes or until mixture is hot, bubbly and golden brown. Serve immediately.

Notes

*Use whatever kind of frozen vegetables you have on hand or that your family loves.

Tried this Recipe? Pin it for Later!Mention @PracticallyHomemade or tag #practicallyhomemade!

Frozen Vegetable Casserole Recipe - Practically Homemade (2024)

FAQs

Can you use frozen vegetables in a casserole? ›

If you want a crispy result, it may be better to bread the vegetables (fried okra, anyone?) . . . or just to buy fresh. Frozen vegetables work best with soups, stews, casseroles, smoothies, or any use where a softer vegetable isn't a deal-breaker.

How to make your own frozen vegetables? ›

How to prep: Wash the vegetables and cut or break them into florets. Blanch them for 3 minutes, transfer them to a bowl of ice water to cool, drain them, and allow them to dry completely. Then, spread them in a single layer on a parchment-lined baking sheet and freeze for 2 hours, or until fully frozen.

How do you cook frozen vegetables so they taste good? ›

Sauté them!

Since frozen vegetables are blanched (partially cooked), they are done quickly. Depending on the veggie, you can sauté them over medium heat with olive oil or medium high heat with avocado oil for about 5 maybe 10 minutes and they are done. You can easily add any seasonings as well.

Do frozen vegetables need to be thawed before baking? ›

Frozen vegetables, no matter which, can be cooked from a frozen state,” says Amidor. “Because they are small pieces (compared to a big beef or pork roast, for example) as long as they reach a minimum internal cooking temperature of about 135 degrees F they are safe to eat,” she says, meaning defrosting isn't required.

What do you need to avoid when preparing frozen vegetables? ›

Steaming, Boiling, or Microwaving Them

(If it's yes, that's another cooking mistake you might be making.) But you wouldn't cook your fresh veggies this way, why would you cook your frozen veggies this way? The answer is, you shouldn't.

Can I bake a frozen casserole without thawing? ›

Yes. It is safe to reheat frozen leftovers without thawing, either in a saucepan or microwave (in the case of a soup or stew) or in the oven or microwave (for example, casseroles and combination meals). Reheating will take longer than if the food is thawed first, but it is safe to do when time is short.

What seasoning to put on frozen vegetables? ›

Acidic ingredients like lemon or vinegar, fats like butter and olive oil, spicy condiments like chile flakes or hot sauce, savory ingredients like cheese, bacon and nuts and fresh and dried herbs are all your friends when it comes to frozen vegetables.

How do you cook frozen vegetables without getting soggy? ›

Place a rimmed baking sheet in the oven while it preheats. This is another way to avoid steaming your frozen vegetables. Dumping the frozen vegetables out onto a hot baking sheet means they'll start cooking immediately before any excess moisture on them has a chance to soak in.

Is it better to defrost frozen vegetables before cooking? ›

Frozen vegetables shouldn't be defrosted because they can lose their crunchy texture. Additionally, defrosting frozen vegetables can cause them to lose the flavor and nutrients that are sealed in from their freezing process, especially if you defrost them a day or two prior to cooking.

How long to cook frozen veggies in the oven at 400 degrees? ›

First, pick a frozen vegetable then preheat your oven to 400°F. Add your still-frozen vegetables (with absolutely nothing on them—Liz says adding oil at this stage will actually trap in the moisture, causing soggy veggies) to a parchment-lined baking sheet and roast for 25 to 30 minutes.

Can you put frozen vegetables directly in the oven? ›

Indeed! And you don't need to worry about thawing them either. In fact, you shouldn't thaw frozen vegetables before roasting them. The high heat of the oven will cause the moisture from the frozen vegetables to evaporate rapidly, giving you a crispier result than if you were to pre-thaw your frozen vegetables.

What happens if you bake frozen vegetables? ›

As with any frozen food, veggies are prone to releasing condensation as they thaw. Baking them in a sizzling oven helps evaporate any remaining water rapidly so the veggies won't start to steam from the moisture (resulting in a mushy disaster).

Can I use frozen vegetables instead of fresh? ›

In addition to offering similar nutritional benefits to fresh vegetables, the long shelf life of frozen veggies can make it easier to reduce your food waste. Frozen spinach can last for up to a year in your freezer, compared to fresh spinach, which won't last for much more than a week.

Do you cook vegetables before putting in casserole? ›

Soft vegetables like broccoli can be quickly par-cooked (aka blanched). If you are using hard vegetables like potatoes or carrots or other hardy root vegetables, you'll want to par-cook for longer. Often a quick 2-5 minutes in the microwave will just give them that great head-start.

References

Top Articles
Latest Posts
Article information

Author: Dan Stracke

Last Updated:

Views: 6496

Rating: 4.2 / 5 (43 voted)

Reviews: 82% of readers found this page helpful

Author information

Name: Dan Stracke

Birthday: 1992-08-25

Address: 2253 Brown Springs, East Alla, OH 38634-0309

Phone: +398735162064

Job: Investor Government Associate

Hobby: Shopping, LARPing, Scrapbooking, Surfing, Slacklining, Dance, Glassblowing

Introduction: My name is Dan Stracke, I am a homely, gleaming, glamorous, inquisitive, homely, gorgeous, light person who loves writing and wants to share my knowledge and understanding with you.