Creamy Winter Vegetable Casserole

Featured in: Sunrise Spoonfuls

This creamy winter vegetable casserole features a comforting mix of seasonal vegetables—think carrots, parsnips, cauliflower, and more—enrobed in a rich, savory mushroom cream sauce with a hint of cheese. It’s all finished with a buttery, crunchy breadcrumb topping that turns a simple selection of veggies into a cozy, satisfying main or side. With just 45 minutes from prep to table, this dish brings warmth and flavor to any cold-weather gathering, making it a go-to for both family dinners and festive occasions.

Updated on Mon, 15 Sep 2025 19:37:46 GMT
A plate of food with broccoli and cauliflower. Save It
A plate of food with broccoli and cauliflower. | sunnyspoonful.com

This creamy winter vegetable casserole is my favorite answer to those frosty nights when all I want is something wholesome but not heavy. Brimming with roasted roots and cruciferous veggies, everything binds together in a silky sauce under a bubbling crisp topping. It is the type of dish you carry to the table and everyone instantly wants to dig in.

I started making this casserole during the holidays as a way to cozy up and clear out the produce drawer. Now relatives beg me to bring it for family gatherings because it is so comforting and never boring.

Ingredients

  • Mixed winter vegetables: This is where you can be creative Carrots broccoli cauliflower Brussels sprouts or parsnips all work Make sure you are choosing veggies that are firm and fresh for best flavor and texture
  • Low fat cream of mushroom soup: This brings the creamy base Go for a good quality or organic brand for a more homemade flavor
  • Whole milk or unsweetened plant based milk: Either keeps things lush and smooth while still light
  • Shredded cheddar or Gruyère cheese: Adds that essential melting richness Use a block and shred by hand for best melt
  • Breadcrumbs: Regular or panko brings the crunch Test for one that is fresh and dry not stale
  • Butter: A little goes in the topping Choose real butter or plant based for dairy free A quick melt is all you need
  • Dried thyme: This earthy spice warms everything up Make sure yours is aromatic and not too old
  • Garlic powder: Gives a subtle savory backbone Check it is still potent and not clumped
  • Salt and fresh black pepper: Always taste and season to your liking

Instructions

Prepare the Oven and Dish:
Set your oven to 375 degrees Fahrenheit or 190 degrees Celsius and lightly grease a medium sized baking dish to ensure nothing sticks and the casserole gets a nice crust on the edges
Prep the Vegetables:
If you are using fresh vegetables cut them into evenly sized pieces and steam or blanch for three to four minutes This ensures they are just fork tender and stay vibrant Drain well so the sauce stays creamy not watery If you are using frozen veggies simply thaw and pat them dry
Mix the Casserole Base:
Grab a large mixing bowl and combine your prepped vegetables with the cream of mushroom soup milk shredded cheese dried thyme garlic powder and your desired amount of salt and pepper Stir them thoroughly until each piece is coated and you do not see any dry spots
Assemble the Casserole:
Transfer your creamy veggie mixture to the greased baking dish Use a spoon or spatula to spread it out in an even layer This guarantees the topping will crisp up evenly instead of getting soggy patches
Make and Add the Topping:
In a small bowl mix the breadcrumbs with melted butter until every crumb is glistening This step ensures you get an even golden crunch Scatter this topping evenly over the casserole so that every bite gets that perfect contrast
Bake Until Golden:
Place the dish uncovered in the oven and let it bake for about twenty five to thirty minutes but keep a watchful eye You are looking for the top to turn golden brown and the creamy sauce to be bubbling around the edges
Let Rest and Serve:
Once done let the casserole rest for about five minutes so the sauce thickens a little and serving is less messy Now it is all ready to steal the show at your table
A plate of food with broccoli and cauliflower. Save It
A plate of food with broccoli and cauliflower. | sunnyspoonful.com

Gruyère cheese is my secret indulgence here The nutty flavor just melts into the sauce with the vegetables and brings everyone back for seconds Last winter I made two pans for a family dinner and not a scrap was left by the end of the night

Storing Your Casserole

This dish is perfect for making ahead It keeps in the fridge for up to four days Store in an airtight container or cover your baking dish tightly with foil When you want to reheat pop it in the oven at three hundred and fifty degrees Fahrenheit until hot and bubbly For individual portions the microwave works well too

Freezer Meal Conversion

Great for batch cooking you can freeze the assembled and unbaked casserole Wrap tightly with two layers of plastic then foil and freeze for up to three months Thaw overnight in the fridge then bake as usual adding a few extra minutes if needed

Ingredient Swaps and Substitutes

For a gluten free version use gluten free breadcrumbs and a gluten free soup base Non dairy cheese and oat or almond milk work beautifully if you need it dairy free If you want more protein add a cup of cooked quinoa or even some canned beans If you dislike mushroom flavor cream of celery soup is just as lovely

Cultural Nods and Historical Context

This type of hearty casserole has long been a staple for American families especially in colder seasons Using affordable pantry staples and whatever root vegetables are in season it was usually baked on Sundays or during holidays for a dish that could stretch to feed a crowd What I love is that every family puts their own spin on it

Serving Inspiration and Pairings

I love pairing this casserole with roasted chicken or a simple salad If you want to keep things vegetarian serve it with a crisp apple and walnut salad or a hunk of good sourdough It also makes a satisfying hot lunch on its own and my niece even likes it packed in her thermos for school lunches

Tips for Seasonal Adaptation

In early winter try root veggies like sweet potato and carrots As the season progresses add in Brussels sprouts cauliflower or broccoli A handful of chopped fresh parsley or chives brightens everything just before serving

Success Stories from My Table

Over the years this casserole has been the unexpected hit at many gatherings One friend made it for her book club and it quickly became a winter tradition Another neighbor brings it to our street potlucks and always fields requests for the recipe It really is the kind of comfort food that brings people together

A plate of food with broccoli and cauliflower. Save It
A plate of food with broccoli and cauliflower. | sunnyspoonful.com

This casserole is wholesome, cozy, and guaranteed to bring everyone back for seconds. Make it once and it will become a staple comfort dish all winter long.

Recipe FAQs

What vegetables work best in this casserole?

Sturdy winter vegetables like carrots, parsnips, cauliflower, broccoli, and Brussels sprouts are ideal. Dice them evenly for uniform cooking.

Can I make this dish gluten-free?

Yes, simply use gluten-free breadcrumbs and a certified gluten-free cream soup to suit dietary needs.

How do I add extra protein?

Stir in a cup of cooked quinoa or add white beans before baking for a protein boost.

What cheese can I use?

Cheddar and Gruyère both melt well and add flavor, but feel free to substitute with your favorite melting cheese.

Can this casserole be made dairy-free?

Yes, use non-dairy cheese, plant-based milk, and a dairy-free cream-style soup for a vegan-friendly variation.

Creamy Winter Vegetable Casserole

Tender winter vegetables in a creamy sauce, baked with a golden breadcrumb topping for a cozy meal.

Prep Time
15 mins
Cook Time
30 mins
Total Duration
45 mins
Authored by Lana Bright

Recipe Type Sunrise Spoonfuls

Skill Level Easy

Cuisine Style American

Recipe Yield 4 Serving Size

Diet Preferences Vegetarian-Friendly

What You'll Need

Vegetables

01 2 cups mixed winter vegetables, such as diced carrots, parsnips, cauliflower, broccoli, or Brussels sprouts

Sauce

01 1 can (10.5 oz) low-fat cream of mushroom soup
02 1/2 cup whole milk or unsweetened plant-based milk

Cheese

01 1/2 cup shredded cheddar or Gruyère cheese

Topping

01 1/4 cup breadcrumbs, regular or panko style
02 1 tablespoon melted butter

Seasonings

01 1/2 teaspoon dried thyme
02 1/4 teaspoon garlic powder
03 Salt and freshly ground black pepper, to taste

Directions

Step 01

Prepare Oven and Baking Dish: Preheat oven to 375°F. Lightly grease a medium baking dish with butter or oil.

Step 02

Prep Vegetables: Steam or blanch fresh vegetables for 3 to 4 minutes until just tender, then drain well. For frozen vegetables, thaw completely and pat dry to remove excess moisture.

Step 03

Combine Filling Ingredients: In a large mixing bowl, combine the prepared vegetables, low-fat cream of mushroom soup, milk, shredded cheese, dried thyme, garlic powder, salt, and black pepper. Mix thoroughly so all pieces are evenly coated.

Step 04

Fill Baking Dish: Transfer the vegetable mixture to the prepared baking dish and spread evenly using a spoon or spatula.

Step 05

Add Topping: In a small bowl, mix breadcrumbs with melted butter until well combined. Sprinkle the breadcrumb mixture evenly on top of the casserole.

Step 06

Bake: Bake uncovered for 25 to 30 minutes, or until the topping is golden brown and the filling is bubbling around the edges.

Step 07

Rest and Serve: Allow the baked casserole to rest for 5 minutes before serving warm.

Tools You'll Need

  • Medium baking dish
  • Mixing bowl
  • Saucepan
  • Spoon or spatula

Allergy Information

Review each ingredient to identify potential allergens, and consult a healthcare professional if you're unsure.
  • Contains dairy and gluten; for gluten-free use appropriate cream soup and breadcrumbs. For dairy-free, select plant-based cheese, milk, and soup alternatives. Always verify labels for allergen information.

Nutrition Details (Per Serving)

This nutritional data is for reference only and isn't a substitute for medical advice.
  • Caloric Value: 235
  • Fats: 11 grams
  • Carbohydrates: 23 grams
  • Proteins: 9 grams