Cheesy Vegetable Casserole is the ultimate comfort food side dish, perfect for family dinners, potlucks, or holiday gatherings. Packed with broccoli, cauliflower, carrots, and smothered in a rich, creamy cheese sauce, this casserole is hearty, flavorful, and sure to satisfy even picky eaters.

Unlike ordinary vegetable sides, this casserole elevates simple vegetables with creamy textures, melty cheese, and a lightly crisp topping, creating a dish that is both comforting and visually appealing. It’s an easy way to get your family excited about vegetables without compromising flavor.

This recipe is simple, flexible, and customizable. Swap vegetables based on what you have on hand, or add cooked chicken or bacon for extra protein. With minimal prep and easy assembly, it’s perfect for busy weeknights and holiday dinners alike.

Why This Casserole Works

Combines multiple vegetables for color, flavor, and nutrients
Creamy cheese sauce binds ingredients and adds richness
Baked topping adds a lightly crisp texture
Simple preparation makes it accessible for beginner cooks

The balance of creamy sauce and vegetables ensures the casserole is indulgent without being heavy. It’s also an excellent way to introduce vegetables to children or reluctant eaters.

Ingredients

2 cups broccoli florets
2 cups cauliflower florets
1 cup sliced carrots
2 tablespoons butter
2 tablespoons all-purpose flour
1 ½ cups milk
1 cup shredded cheddar cheese
½ cup shredded mozzarella cheese
½ teaspoon garlic powder
½ teaspoon onion powder
Salt and black pepper, to taste
½ cup breadcrumbs
2 tablespoons melted butter (for topping)
Fresh parsley, chopped, for garnish

Instructions

Preheat oven to 375°F (190°C) and lightly grease a 9×13-inch casserole dish.
Steam or blanch broccoli, cauliflower, and carrots until slightly tender, about 5 minutes. Drain well.
In a medium saucepan, melt butter over medium heat. Stir in flour and cook for 1 minute to form a roux.
Gradually whisk in milk until smooth. Cook 2–3 minutes until slightly thickened.
Remove from heat and stir in cheddar, mozzarella, garlic powder, onion powder, salt, and pepper until cheese melts.
Place steamed vegetables in the casserole dish and pour cheese sauce over them. Stir gently to combine.
Mix breadcrumbs with melted butter and sprinkle evenly over the top.
Bake 20–25 minutes until bubbly and golden on top.
Remove from oven, garnish with fresh parsley, and serve warm.

Tips for the Best Cheesy Vegetable Casserole

Don’t overcook vegetables to avoid mushy texture
Use freshly shredded cheese for a smoother sauce
Toast breadcrumbs lightly before topping for extra crunch
Customize with your favorite vegetables or add-ins

Variations and Add-Ins

Protein boost: Add cooked chicken, bacon, or sausage
Extra creamy: Mix in cream cheese or sour cream
Spicy: Add red pepper flakes or diced jalapeños
Gluten-free: Use gluten-free flour and breadcrumbs

Serving Suggestions

Serve as a side for roasted meats, grilled chicken, or turkey. It also pairs well with a fresh green salad for a complete meal.

Storage and Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F (175°C) until warmed through to maintain creamy texture.

Cultural Context

Cheesy vegetable casseroles are classic American comfort food, often served during holidays or family gatherings. They transform simple vegetables into an indulgent dish that appeals to all ages, making them a timeless side dish favorite.