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This cheesy vegetable bake is a delicious vegetable medley that takes mere minutes to throw together. It’s a foolproof dish prepared with frozen mixed vegetables, cream of mushroom soup, butter, cheese, and crispy bread crumbs. Serve this as a side with anything from chicken to meatloaf, steak, ribs, or your preferred protein. You just can’t go wrong with a cheesy vegetable casserole.

A cheesy vegetable casserole on a plate.

If you’re looking for new vegetable casserole ideas, you can’t go wrong with this tasty recipe. Boasting a variety of tasty veggies and a creamy cheese sauce, this breadcrumb topped side dish pairs with anything, and it’s incredibly easy to make.

If you want to get more veggies into your eating regimen, what about trying smoked elote or mushroom foccacia bread? These recipes with frozen vegetable are also delicious. And you might also like pizza zucchini boats or creamy lemon pasta!

A fork taking some of a cheesy mixed vegetable bake.

Why You’ll Love It

Full of flavour: The combination of vegetables and cheese is a classic one, featured in many recipes. A vegetable casserole doesn’t have to be complicated to be delicious, and this frozen vegetables casserole dish is proof of that.
Simple to prepare: Once you’ve cooked the vegetables, you just need to add the sauce and breadcrumb topping and bake. Mixed vegetable casserole is one of the easiest recipes you can make with veggies and cheese.
Versatile: Feel free to change the vegetables for any veggies you like. You can also tweak the cheese sauce and seasonings however you want.

A casserole side dish made with Velveeta and frozen vegetables.

Cheesy Veggie Casserole Ingredients

Frozen mixed vegetables are always worth having in the freezer since you can make delicious side dishes like this easy Velveeta veggie casserole. The other ingredients you’ll need for the vegetable casserole are cream of mushroom soup, butter, Velveeta cheese, mushrooms, onion powder, and breadcrumbs.

Ingredients to make a cheesy vegetable casserole recipe.

How to Make This Vegetable Bake with Cheese

For more detailed instructions with weights and measurements, jump to the printable recipe card.

Thaw and heat the frozen veggies: Cook the frozen vegetables in a casserole dish or baking dish, stirring occasionally.
Make the sauce: Warm the soup, butter and Velveeta together in a saucepan, and then add the mushrooms and onion powder and pour it over the vegetables.
Add the topping and bake: Sprinkle the breadcrumbs over the cheesy vegetable casserole and bake until golden brown at the edges and bubbling on top, then serve this tasty, easy recipe hot as a side dish.

Making a mixed vegetable casserole with cheese.
Overhead view of a plate of a vegetable side dish.

Substitutions and Variations

Any frozen mixed veggies will work in this recipe, and frozen broccoli, peas, cauliflower, carrots, and corn all work nicely here. Fresh veggies could be used, too, but the cooking time will need to be adjusted for more dense fresh vegetables.

A scoop of a cheesy vegetable medley bake.

You can omit any kind of vegetables you don’t like, perhaps leaving the sliced mushrooms out of the recipe and swapping the mushroom soup for another creamy variety. You can also choose to use panko on top instead of regular breadcrumbs, or even crumbled Ritz crackers.

A spoon scooping a cheesy side dish.

How to Serve Frozen Vegetable Casserole

A mixed vegetable casserole pairs beautifully with so many different kinds of meat, poultry and even some seafood dishes. Consider trying grilled blackened chicken, Italian beef, roasted chicken, or stuffed flank steak. Another idea is making a batch of cheesy vegetable casserole and having it as part of a buffet spread.

A side dish made with frozen mixed vegetables.

How to Store Vegetable Casserole Leftovers

Store: Leftovers will keep for up to 3 days in an airtight container in the refrigerator.
Reheat: Warm up leftovers in the oven or microwave.
Freeze: This vegetable casserole is suitable for freezing, and you can freeze it together or separate it into portions if you will want to thaw them individually.

A side dish casserole served on a plate.

Mixed Vegetable Casserole FAQs

Can you make a mixed vegetable casserole with fresh vegetables?

You can definitely make this using fresh vegetables. Anything goes, such as zucchini, peas, green beans, sweet potatoes, carrots, mushrooms, eggplant, and so on.

When using fresh vegetables, bear in mind dense ones (pumpkin or carrots for example) take longer to cook than soft ones (like mushrooms or zucchini), so you’ll need to bake the dense ones for a while before adding the softer ones, so everything is done at the same time.

Can you change the sauce if you don’t like Velveeta cheese?

Velveeta is one of those things some people love and others really don’t, but you can make a mixed vegetable casserole with any kind of cheese sauce you prefer. Consider making your own with sour cream, melted butter, shredded cheddar cheese, cream cheese, chicken broth, or whatever you wish to use.

A fork picking up a vegetable casserole with cheese.

Cheesy Vegetable Casserole Recipe

5 from 71 votes

Cheesy Vegetable Casserole

By: Bella Bucchiotti
Serve this as a side with anything from chicken to meatloaf, steak, or ribs. You just can't go wrong with a cheesy vegetable casserole.
Prep Time: 5 minutes
Cook Time: 55 minutes
Total Time: 1 hour
Servings: 6


  • 2 Packages mixed frozen vegetables, 12 ounce packages, I used broccoli, cauliflower, and carrots
  • 1 Can cream of mushroom soup, 10.5 ounce can
  • ½ Cup butter
  • 8 Ounces Velveeta cheese
  • 1 Can mushrooms, 4 ounce can, sliced, drained
  • 1 Teaspoon onion powder
  • 1 Tablespoon bread crumbs, plain


  • Preheat the oven to 350 degrees F. Spread mixed frozen vegetables evenly into an oval or rectangle baking pan (just don’t use a baking sheet). Bake for 30 to 35 minutes or until heated through. Mix at least once while baking so the vegetables thaw evenly.
  • In a small pot over medium heat, mix together soup, butter, and Velveeta cheese until everything is melted and combined.
  • Add sliced mushrooms and onion powder; mix well.
  • Pour cheese sauce over the vegetables.
  • Top with bread crumbs.
  • Bake for 15 to 20 more minutes or until the cheese is bubbly and starting to brown around the edges.


Calories: 196kcal | Carbohydrates: 22g | Protein: 14g | Fat: 6g | Saturated Fat: 4g | Polyunsaturated Fat: 0.4g | Monounsaturated Fat: 1g | Cholesterol: 21mg | Sodium: 1038mg | Potassium: 429mg | Fiber: 4g | Sugar: 4g | Vitamin A: 5211IU | Vitamin C: 10mg | Calcium: 270mg | Iron: 1mg
Like this recipe? Rate and comment below!

When it comes to tasty side dishes, this vegetable casserole recipe is one of the best. It’s super-simple to prepare and you can mix and match the vegetables you use. The creamy cheese sauce is lovely with the vegetables and the crispy breadcrumb topping finishes this cheesy vegetable casserole just perfectly.

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Bella Bucchiotti

Bella Bucchiotti is a Canadian-based syndicated food, travel, and lifestyle writer, photographer, and creator at xoxoBella. She founded xoxoBella in 2015, where she shares her love for food, dogs, sustainability, fitness, crafts, outdoor adventures, travel, and philanthropy to encourage others to run the extra mile, try new recipes, visit unfamiliar places, and stand for a cause. Bella creates stress-free and family-friendly recipes for weeknight dinners and festive feasts.


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Recipe Rating


  1. 5 stars
    I made it for the first time this week. So delicious and perfect for a healthy weeknight dinner!

  2. 5 stars
    You had me at cheesy. So glad I get to try this recipe and it has now been a staple in my household.