Cheesy Vegetable Casserole (With Frozen Vegetables)

5 from 2 votes
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Cheesy vegetable casserole is a crowd favorite! The ultimate side dish filled with veggies, cheese, and topped with crushed buttery crackers.

Vegetable casserole on a serving spoon.


Cheesy vegetable casserole is my go-to side dish for family events and holidays. It’s loaded with vegetables, cheese and topped off with crumbly, buttery crackers. This is a great way to get the kiddos to eat their veggies.

Ingredients needed

  • Frozen vegetables – Use your favorite mix of frozen vegetables for this dish.
  • Cream of mushroom soup – Gives the mixture a creamy texture.
  • Sour cream – Adds a little tang and more creaminess.
  • Onion – Diced onion is used.
  • Cheese – Shredded cheddar cheese takes this casserole to the next level.
  • Butter – Melted butter helps to make the cracker topping.
  • Crackers – I like using Ritz crackers but you can use your favorite buttery cracker.

How to make frozen vegetable casserole

  • Filling – Stir together frozen vegetables, sour cream, cheese, onions, and cream of mushroom soup. Spread in a casserole dish sprayed with non-stick cooking spray.
  • Crust – Mix crushed crackers with melted butter. Spread the mixture over the filling. Bake in the oven until the crackers turn golden brown.
Steps on How to make cheesy vegetable casserole

How to store

Store: If you have any leftovers, you can cover with plastic wrap or transfer to an airtight container. Keep in the refrigerator for up to 4 days. Reheat in the oven at 350 degrees for 10 minutes or in the microwave.

Freeze: You can freeze this dish for up to 3 months.

Cheesy Vegetable Casserole is a crowd favorite. The ultimate side dish filled with veggies, cheese, and topped with crushed buttery crackers.

Cooks tips and substitutions

  • You can substitute the crushed crackers with fried onions or crushed potato chips.
  • Try substituting cream of mushroom with either cream of celery soup or cream of chicken soup.
Plate of casserole with peas and carrots.

More Casserole Recipes

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Casserole dish with vegetable casserole.
5 from 2 votes

Cheesy Vegetable Casserole

By Heather
Cheesy Vegetable Casserole is a crowd favorite. The ultimate side dish filled with veggies, cheese, and topped with crushed buttery crackers.
Prep: 10 minutes
Cook: 40 minutes
Total: 50 minutes
Servings: 6


  • 1 cup frozen cut green beans, thawed
  • 2 cups frozen peas and carrots, thawed
  • 1 cup frozen corn, thawed
  • 1 can cream of mushroom soup
  • 1/2 cup sour cream
  • 1 cup onion, chopped
  • 1 cup shredded mild cheddar cheese
  • 1/4 cup butter, melted
  • 1 cup butter crackers, crushed into small pieces
  • 1/4 teaspoon salt
  • 1/2 teaspoon ground black pepper
  • 1/4 teaspoon paprika
  • 1/2 teaspoon dried oregano


  • Preheat oven to 350 degrees F.
  • Grease 9×13 baking dish with non-stick cooking spray.
  • In a large bowl stir together frozen vegetables, cream of mushroom soup, sour cream, cheese,onion, paprika, oregano, salt and pepper. 
  • Pour mixture into baking dish.
  • In a small bowl, mix together cracker crumbs and melted butter. Spread the cracker crumbs evenly over the vegetable mixture.
  • Bake for 30-40 minutes. 


Calories: 329kcal | Carbohydrates: 25g | Protein: 11g | Fat: 21g | Saturated Fat: 12g | Cholesterol: 52mg | Sodium: 785mg | Potassium: 370mg | Fiber: 3g | Sugar: 3g | Vitamin A: 5145IU | Vitamin C: 11.6mg | Calcium: 202mg | Iron: 1.9mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Side Dish
Cuisine: American
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Recipe Rating


  1. I made this for a funeral dinner a while back and it was a huge hit. Then I lost the recipe I printed out. There are many ‘similar’ recipes like this-but this one is the winner. I’ve spent most of the morning searching, and finally found. Thank goodness. I’ve now saved it in 3 of my boards, haha. Thanks for such a tasty side.

  2. 5 stars
    This casserole looks absolutely fantastic!! And I love those dish cloths, too…life changing! #client