Cheesy Vegetable Casserole Bake

Featured in: Comfort Food

This dish brings together assorted fresh vegetables such as broccoli, cauliflower, carrots, peas, and red bell pepper, coated in a luxuriously smooth cheddar-Parmesan cheese sauce. Blanching the vegetables ensures a vibrant taste and tender texture, while the crunchy mozzarella and panko topping delivers an irresistible finish. Easily prepared in a single baking dish, the casserole can be made ahead and is versatile for substitutions. Serve it fresh from the oven for a warming main course suited to family gatherings, weeknight comfort meals, or festive potlucks. Pair with salad and rustic bread for a complete meal.

Updated on Wed, 22 Oct 2025 18:56:53 GMT
Golden, bubbly Cheesy Vegetable Casserole with tender vegetables, perfect comfort food for a cozy night. Save
Golden, bubbly Cheesy Vegetable Casserole with tender vegetables, perfect comfort food for a cozy night. | berrycottage.com

This Cheesy Vegetable Casserole is my favorite answer to those comfort food cravings. It is loaded with a rainbow of tender veggies nestled in a luxuriously smooth cheese sauce and finished with a golden, bubbly topping. Whether you are feeding family on weeknights or bringing a show-stopper to a potluck, this dish always gets rave reviews and empty plates.

The first time I served this at a holiday were two kids who usually pick out the peas went back for seconds My family has begged me to keep it in our regular dinner rotation ever since

Ingredients

  • Broccoli florets: Fresh broccoli gives a satisfying crunch and keeps its color when blanched Look for bright green heads without brown spots
  • Cauliflower florets: Cauliflower brings creamy texture and absorbs all that cheesy goodness Choose tight white heads for best flavor
  • Sliced carrots: Their natural sweetness pairs with sharp cheese You want firm carrots without cracks
  • Diced red bell pepper: Adds a pop of color and mild sweetness Pick peppers that are heavy and glossy
  • Frozen peas: Peas add bursts of tenderness and cook perfectly from frozen Choose a high-quality bag without ice crystals
  • Unsalted butter: Gives depth and richness Opt for real butter not margarine
  • All-purpose flour: Thickens the sauce Use unbleached flour for a richer flavor
  • Whole milk: Makes the sauce creamy and cohesive Use whole for richness or low-fat if you prefer lighter
  • Shredded sharp cheddar cheese: Classic tangy sharpness shines through the veggies Look for freshly shredded to melt best
  • Grated Parmesan cheese: Adds salty umami and nutty notes Use authentic Parmesan if possible
  • Salt: Fine sea salt brings all flavors together
  • Black pepper: Freshly cracked for subtle heat and earthiness
  • Ground nutmeg: Optional but deepens the cheese sauce Just a pinch transforms the flavor
  • Shredded mozzarella cheese: Melts into a lovely gooey topping Buy blocks and shred at home for best melt
  • Panko breadcrumbs: Extra crunch and lightness to finish Look for Japanese-style panko for ultimate texture
  • Melted butter: Binds the breadcrumbs and helps the topping turn golden yellow

Instructions

Preheat the Oven:
Set your oven to 375 degrees Fahrenheit Make sure you grease your baking dish well so nothing sticks and you get easy serving slices
Blanch the Vegetables:
Fill your biggest pot with water and toss in a little salt Bring it to a rolling boil Add broccoli cauliflower and carrots Let these simmer just three minutes You want them a bit soft but still vibrant Immediately drain and rinse under cold water so they keep their color and do not overcook
Make the Cheese Sauce:
Melt butter over medium heat in a large skillet Once melted whisk in the flour Keep whisking one minute to take away any raw flour flavor Slowly add milk in a steady stream Still whisking watch as the sauce thickens which usually takes about four minutes
Melt Cheese Into the Sauce:
Take the skillet off the heat and stir in sharp cheddar Parmesan salt pepper and a pinch of nutmeg Mix until the cheeses melt into a smooth glossy sauce
Combine the Veggies and Cheese Sauce:
Grab a big bowl and add all the veggies the blanched ones red pepper and peas Pour in your cheese sauce Gently fold everything together so each bite gets some cheesy coating
Transfer to Baking Dish:
Spoon the mixture evenly into your greased casserole dish Try to spread everything out so the layer is even and there are no big air pockets
Assemble the Topping:
In a small bowl mix together mozzarella panko and melted butter Combine by hand until every crumb looks glossy with butter
Top the Casserole and Bake:
Sprinkle the breadcrumb and cheese mixture evenly over the top Pop the dish into your oven Bake twenty five to thirty minutes You will know it is done when the topping is golden and the cheese sauce is visibly bubbling around the edges
Let Rest and Serve:
Pull the casserole out of the oven Let it rest for five minutes This helps the cheesy sauce set up slightly making it easier to cut neat servings
Cheesy Vegetable Casserole: Creamy, cheesy sauce covers colorful vegetables in a family-friendly baked dish. Save
Cheesy Vegetable Casserole: Creamy, cheesy sauce covers colorful vegetables in a family-friendly baked dish. | berrycottage.com

I always look forward to the cheesy pull from that topping layer As soon as I bring this to the table everyone seems to brighten up and reach for a little more even the veggie skeptics in my house

Storage Tips

Leftovers store best in an airtight container in the refrigerator for up to four days Warm gently in the oven or microwave until hot throughout If reheating from chilled let the casserole sit at room temperature while your oven heats to avoid cold spots in the middle

Ingredient Substitutions

Nearly any vegetable you love or have on hand works well in this dish Frozen vegetables save prep time just be sure to thaw and drain before using For a sharper taste swap half the cheddar for Gruyere or use Colby Jack for a milder flavor Gluten free versions are easy with gluten free panko and flour

Serving Suggestions

Pair with a big green salad or a tangy slaw for freshness Crusty bread is perfect for scooping every bit of cheesy sauce This dish goes well alongside roasted chicken or as a festive vegetarian main for the holidays

Cultural Roots

Cheesy casseroles found a place at American family tables in the mid twentieth century as both celebration food and everyday fare They offered an affordable way to combine leftover vegetables with pantry staples Topping with breadcrumbs became the classic hallmark of homey comfort

Imagine a warm Cheesy Vegetable Casserole, a comforting blend of textures and savory flavors. Save
Imagine a warm Cheesy Vegetable Casserole, a comforting blend of textures and savory flavors. | berrycottage.com

Enjoy every cheesy bite of this vegetable casserole and share it with friends for guaranteed smiles around your dinner table.

Recipe FAQ

Can I use frozen vegetables instead of fresh?

Yes, frozen vegetables work well. Thaw and drain them before mixing with the cheese sauce for best results.

How do I make this gluten-free?

Simply substitute gluten-free flour and breadcrumbs to avoid gluten, maintaining texture and flavor.

What type of cheese is best for the sauce?

Sharp cheddar provides depth, while Parmesan adds richness. Feel free to mix in other cheeses for variety.

Can I prepare this casserole in advance?

Yes, assemble and refrigerate before baking. Bake when needed, adding a few extra minutes to cook time if chilled.

Is it suitable for vegetarians?

The dish is entirely vegetarian, featuring only vegetables and dairy ingredients, with no meat or fish included.

How can I add extra flavor?

A splash of cayenne or smoked paprika enhances the sauce. Herbs like thyme or parsley also boost taste.

Cheesy Vegetable Casserole Bake

Colorful vegetables baked in creamy cheese sauce with a crisp golden topping. Rich, comforting, and perfect for sharing.

Prep duration
20 min
Cook duration
40 min
Complete duration
60 min
Created by Lily Anderson


Complexity Easy

Heritage American

Output 6 Portions

Dietary considerations Meat-free

Components

Vegetables

01 2 cups broccoli florets
02 2 cups cauliflower florets
03 1 cup sliced carrots
04 1 cup diced red bell pepper
05 1 cup frozen peas

Cheese Sauce

01 2 tablespoons unsalted butter
02 2 tablespoons all-purpose flour
03 2 cups whole milk
04 1 1/2 cups shredded sharp cheddar cheese
05 1/4 cup grated Parmesan cheese
06 1/2 teaspoon salt
07 1/4 teaspoon black pepper
08 1/4 teaspoon ground nutmeg

Topping

01 1 cup shredded mozzarella cheese
02 1/2 cup panko breadcrumbs
03 1 tablespoon melted butter

Directions

Direction 01

Prepare Oven and Baking Dish: Preheat the oven to 375°F (190°C) and grease a 9x13-inch baking dish.

Direction 02

Blanch Vegetables: Bring a large pot of salted water to a boil. Blanch the broccoli, cauliflower, and carrots for 3 minutes, then drain and rinse with cold water.

Direction 03

Make Roux: In a large skillet, melt 2 tablespoons butter over medium heat. Whisk in the flour and cook for 1 minute.

Direction 04

Thicken Cheese Sauce: Gradually whisk in the milk and cook, stirring constantly, until the sauce is thickened, about 3 to 4 minutes.

Direction 05

Finish Cheese Sauce: Remove the skillet from heat. Stir in cheddar cheese, Parmesan, salt, black pepper, and nutmeg until smooth and fully melted.

Direction 06

Combine Vegetables and Sauce: Place all prepared vegetables, including red bell pepper and peas, in a large mixing bowl. Pour the cheese sauce over and mix gently to coat.

Direction 07

Layer in Baking Dish: Transfer coated vegetables to the prepared baking dish, spreading evenly.

Direction 08

Prepare Topping: In a small bowl, combine shredded mozzarella, panko breadcrumbs, and melted butter. Sprinkle topping evenly over the casserole.

Direction 09

Bake: Bake for 25 to 30 minutes until the topping is golden brown and the casserole is bubbling.

Direction 10

Rest and Serve: Allow to rest for 5 minutes prior to serving.

Necessary tools

  • Large pot
  • Large skillet
  • Whisk
  • Large mixing bowl
  • 9x13-inch baking dish
  • Measuring cups
  • Measuring spoons

Allergy information

Review each ingredient for potential allergens and seek professional medical advice if you have concerns.
  • Contains dairy (milk, butter, cheese) and gluten (flour, panko breadcrumbs).
  • To make gluten-free, substitute with certified gluten-free flour and breadcrumbs.
  • For nut allergies, verify cheese and breadcrumb labels are nut-free.

Nutritional information (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy: 320
  • Fats: 18 g
  • Carbohydrates: 27 g
  • Proteins: 14 g