Sunday Baked Vegetable Casserole

Highlighted under: Baking & Desserts

I love to make this Sunday Baked Vegetable Casserole as the perfect way to unwind after a long week. The combination of fresh vegetables with a creamy sauce and a crunchy topping makes for a delightful and satisfying dish. What I enjoy most is how versatile the recipe is; you can use whatever vegetables you have on hand. Every Sunday, this hearty casserole is our family favorite, and it never fails to bring smiles to our table as we gather to enjoy it together.

Kayla Monroe

Created by

Kayla Monroe

Last updated on 2026-01-13T20:16:17.772Z

When I first tried making this casserole, I was amazed at how simple it was to combine all my favorite seasonal vegetables into one dish. I experimented with different sauces and seasonings, and finally settled on a mixture of cream and cheese that adds an irresistible richness. The key to this recipe is to roast the vegetables beforehand to enhance their flavors and ensure they are tender.

I typically use a mixture of zucchini, bell peppers, and spinach, but the beauty of this dish is that you can swap in whatever vegetables are fresh and available. This week, I added some cherry tomatoes for a pop of sweetness, which turned out to be a fantastic addition!

Why You'll Love This Recipe

  • A vibrant mix of seasonal vegetables to brighten your day
  • Creamy sauce that perfectly complements the roasted veggies
  • Crunchy topping adds a satisfying texture to every bite

Finding the Right Vegetables

One of the best features of this Sunday Baked Vegetable Casserole is its incredible versatility. You can use a variety of seasonal vegetables to change the flavor profile each week. Consider using eggplant for its rich and meaty texture, or swap out spinach for kale to give the dish a hearty bite. Remember, when selecting your vegetables, aim for a mix of colors and textures to create a visually stunning and nutrient-packed casserole.

When preparing the vegetables, ensure they are cut into uniform sizes to promote even cooking. For example, slicing zucchini into thin rounds allows it to soften nicely in the oven, while larger chunks of bell pepper may need a bit more time. If using root vegetables like carrots or potatoes, consider pre-cooking them briefly to ensure they do not remain crunchy amid the other tender vegetables.

Perfecting the Cream Sauce

The cream sauce plays a pivotal role in this casserole, adding a richness that binds the vegetables together. By using a combination of heavy cream and flavorful seasoning, the sauce enhances the overall taste of the dish while keeping it moist. If you're looking for a lighter option, try substituting half of the cream with Greek yogurt, which also offers protein without sacrificing creaminess.

One key tip when mixing the cream and seasonings is to whisk them thoroughly until you achieve a uniform consistency. This helps ensure that every bite is well-seasoned and creamy. Be cautious not to overmix once you add the veggies, as this can break them down. You want to keep the vegetables intact for a beautiful presentation once baked.

Serving and Storing Leftovers

Once the casserole is baked to perfection, I recommend letting it sit for about 10 minutes before serving. This allows the flavors to meld and the dish to firm up slightly, making it easier to portion. Serve it alongside a crisp green salad or crusty bread to make it a complete meal. The combination of crunchy topping and tender vegetables creates a satisfying and hearty experience.

If you have leftovers, cool the casserole completely before transferring it to an airtight container. It can be stored in the refrigerator for up to three days. For longer storage, freeze the cooled casserole (before baking) for up to three months. When ready to eat, simply thaw overnight in the fridge and bake at 375°F (190°C) for about 30-35 minutes, or until heated through.

Ingredients

Gather your fresh ingredients for this delicious casserole:

For the Casserole:

  • 2 zucchini, sliced
  • 1 bell pepper, diced
  • 1 cup spinach, chopped
  • 1 cup cherry tomatoes, halved
  • 1 cup cream
  • 1 cup shredded cheese (cheddar or mozzarella)
  • 1 teaspoon garlic powder
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 cup breadcrumbs

Mix everything well and prepare for baking!

Instructions

Follow these steps for a delicious homemade casserole:

Preheat the Oven

Preheat your oven to 375°F (190°C).

Prepare the Vegetables

In a mixing bowl, combine the sliced zucchini, diced bell pepper, chopped spinach, and halved cherry tomatoes.

Make the Cream Mixture

In another bowl, mix the cream, garlic powder, salt, and black pepper until well combined.

Combine and Layer

Pour the cream mixture over the vegetables and stir gently. Then transfer the mixture to a greased baking dish.

Add Cheese and Breadcrumbs

Sprinkle the shredded cheese evenly over the top, followed by the breadcrumbs.

Bake the Casserole

Bake in the preheated oven for 40-45 minutes, or until the top is golden and the vegetables are tender.

Serve and Enjoy

Remove the casserole from the oven, let it cool slightly, and serve warm.

Enjoy your delicious vegetable casserole!

Secondary image

Pro Tips

  • Feel free to customize the vegetables used based on what you have in your fridge. Leftover roasted vegetables can also be great in this dish!

Troubleshooting Casserole Texture

If you find that your casserole is watery after baking, it may be due to excess moisture from the vegetables. To prevent this, consider salting the vegetables in advance and letting them sit for about 15 minutes. This draws out excess moisture, resulting in a firmer texture once baked. Another option is to add a tablespoon of cornstarch to the cream mixture, which helps thicken the sauce as it cooks.

Conversely, if your casserole comes out too dry, you can add a splash more of cream or broth before serving to revive the moisture. Additionally, ensuring that your vegetables are adequately coated in the cream mixture will help maintain moisture during baking. A well-balanced ratio of vegetables to sauce is important for a successful dish.

Creative Variations to Try

To add a new twist to the traditional recipe, consider incorporating herbs or spices that enhance the flavors of the vegetables. Fresh thyme or rosemary can complement a variety of seasonal vegetables beautifully. Alternatively, a sprinkle of crushed red pepper flakes can add a nice kick, perfect for those who enjoy a little heat.

For an added boost of flavor, try mixing in cooked grains like quinoa or bulgur before baking. This not only enhances the nutritional profile but also creates a heartier dish. You can even layer the grains at the bottom of the baking dish, followed by the vegetable mix, allowing for a unique presentation and texture that will surprise your family at the dinner table.

Questions About Recipes

→ Can I make this casserole ahead of time?

Yes, you can prepare the casserole and store it in the refrigerator for up to 24 hours before baking.

→ What can I substitute for cream?

You can use a mixture of Greek yogurt and milk or a dairy-free alternative like coconut cream.

→ Is this recipe vegetarian?

Yes, this casserole is vegetarian-friendly!

→ How can I make this casserole gluten-free?

You can substitute regular breadcrumbs with gluten-free breadcrumbs.

Sunday Baked Vegetable Casserole

I love to make this Sunday Baked Vegetable Casserole as the perfect way to unwind after a long week. The combination of fresh vegetables with a creamy sauce and a crunchy topping makes for a delightful and satisfying dish. What I enjoy most is how versatile the recipe is; you can use whatever vegetables you have on hand. Every Sunday, this hearty casserole is our family favorite, and it never fails to bring smiles to our table as we gather to enjoy it together.

Prep Time20 minutes
Cooking Duration45 minutes
Overall Time65 minutes

Created by: Kayla Monroe

Recipe Type: Baking & Desserts

Skill Level: Intermediate

Final Quantity: 6 servings

What You'll Need

For the Casserole:

  1. 2 zucchini, sliced
  2. 1 bell pepper, diced
  3. 1 cup spinach, chopped
  4. 1 cup cherry tomatoes, halved
  5. 1 cup cream
  6. 1 cup shredded cheese (cheddar or mozzarella)
  7. 1 teaspoon garlic powder
  8. 1 teaspoon salt
  9. 1/2 teaspoon black pepper
  10. 1/2 cup breadcrumbs

How-To Steps

Step 01

Preheat your oven to 375°F (190°C).

Step 02

In a mixing bowl, combine the sliced zucchini, diced bell pepper, chopped spinach, and halved cherry tomatoes.

Step 03

In another bowl, mix the cream, garlic powder, salt, and black pepper until well combined.

Step 04

Pour the cream mixture over the vegetables and stir gently. Then transfer the mixture to a greased baking dish.

Step 05

Sprinkle the shredded cheese evenly over the top, followed by the breadcrumbs.

Step 06

Bake in the preheated oven for 40-45 minutes, or until the top is golden and the vegetables are tender.

Step 07

Remove the casserole from the oven, let it cool slightly, and serve warm.

Extra Tips

  1. Feel free to customize the vegetables used based on what you have in your fridge. Leftover roasted vegetables can also be great in this dish!

Nutritional Breakdown (Per Serving)

  • Calories: 320 kcal
  • Total Fat: 20g
  • Saturated Fat: 10g
  • Cholesterol: 40mg
  • Sodium: 350mg
  • Total Carbohydrates: 28g
  • Dietary Fiber: 4g
  • Sugars: 6g
  • Protein: 10g