Sunday Baked Vegetable Casserole

Highlighted under: Baking & Desserts

I absolutely love making a Sunday Baked Vegetable Casserole, and it has quickly become a cherished family favorite. The vibrant colors of the fresh vegetables combined with the creamy cheese sauce create a dish that's not only delicious but also visually appealing. This casserole is versatile, allowing me to use whatever vegetables I have on hand, making it a go-to recipe for meal prep. I enjoy serving it alongside crusty bread or a simple salad, transforming a busy Sunday into a delightful feast with minimal effort.

Brittany Shaw

Created by

Brittany Shaw

Last updated on 2026-01-13T20:40:19.356Z

When I first decided to try making a baked vegetable casserole, I experimented with combinations of seasonal veggies and various herbs. I found that roasting the vegetables before adding them to the casserole makes a significant difference in flavor, intensifying their natural sweetness and earthy notes. The first time I tasted it fresh from the oven, I was hooked!

One specific tip I learned is to sprinkle fresh herbs just before serving; it adds a burst of freshness that beautifully complements the baked flavors. Also, feel free to adjust the cheese blend to your liking—adding a bit of smoked gouda gives it a unique twist that my family adores!

Why You Will Love This Recipe

  • A colorful medley of fresh vegetables bursting with flavor
  • Cheesy topping that creates a golden, crispy finish
  • Perfect for leftovers that taste even better the next day

Choosing the Right Vegetables

Selecting fresh, vibrant vegetables is key to enhancing the flavor and appearance of your Sunday Baked Vegetable Casserole. While the recipe calls for zucchini, bell peppers, and broccoli, feel free to experiment with seasonal produce like asparagus or butternut squash. Using a variety of colors not only makes the dish more appealing but also ensures a range of nutrients. Aim for about 6 to 7 cups of mixed vegetables for the best balance.

Another essential tip is to cut vegetables into uniform sizes. This ensures even cooking and prevents some pieces from becoming mushy while others remain crunchy. For instance, slice the zucchini and mushrooms about half an inch thick to mimic the texture of the bell pepper and onion. Keep in mind that denser vegetables, like carrots, may need slightly longer roasting times, so consider pre-cooking them briefly if you choose to include them.

Perfecting the Cheese Blend

The combination of mozzarella, ricotta, and Parmesan cheese not only provides delightful creaminess but also a depth of flavor that elevates this casserole. Mozzarella melts beautifully, creating that sought-after gooey texture, while ricotta adds richness and moisture. Using whole milk ricotta achieves a creamier mouthfeel, so avoid low-fat versions if possible. For a twist, consider mixing in some goat cheese for tang, or using a lactose-free mix if needed.

Make sure to reserve a portion of the cheese for the top layer. This will create a crispy, caramelized crust as it bakes. For an aromatic touch, sprinkle some Italian seasoning or fresh herbs like basil or parsley on top before baking. If you're looking for a lighter option, you can reduce the cheese quantities by about 25%, maintaining the flavor while cutting down on richness.

Storage and Reheating Tips

This casserole is perfect for meal prep, as it stores well and can taste even better the next day. To store, cover the casserole tightly with plastic wrap or aluminum foil and keep it in the refrigerator for up to 3 days. If you want to freeze leftovers, divide them into portions and place them in airtight containers for up to 3 months. When reheating, let the casserole thaw in the refrigerator overnight and reheat in the oven at 350°F (175°C) until warmed through, about 25-30 minutes.

If you find the casserole a bit dry after storing, drizzle a little olive oil or broth on top just before heating. This not only revives the moisture but also prevents the cheese from becoming tough. You may also consider adding a splash of cream or milk to the mix if you decide to bake from frozen; this can help maintain creaminess and provide a fresher flavor when reheating.

Ingredients

Gather the following ingredients before you start cooking:

Ingredients for Casserole

  • 1 zucchini, sliced
  • 1 bell pepper, diced
  • 1 onion, chopped
  • 2 cups broccoli florets
  • 2 cups mushrooms, sliced
  • 1 cup cherry tomatoes, halved
  • 2 cloves garlic, minced
  • 1 teaspoon dried oregano
  • 1 teaspoon dried thyme
  • Salt and pepper to taste
  • 2 cups shredded mozzarella cheese
  • 1 cup ricotta cheese
  • 1/2 cup grated Parmesan cheese
  • 2 tablespoons olive oil

Make sure to have everything prepped and ready for assembly.

Instructions

Here's how to prepare your Sunday Baked Vegetable Casserole:

Prepare the Vegetables

Preheat your oven to 400°F (200°C). In a large bowl, combine the zucchini, bell pepper, onion, broccoli, mushrooms, cherry tomatoes, garlic, oregano, thyme, salt, and pepper. Drizzle with olive oil and toss to coat evenly.

Roast the Vegetables

Spread the vegetable mixture on a baking sheet in a single layer. Roast in the preheated oven for about 20 minutes, or until the vegetables are tender and slightly caramelized.

Assemble the Casserole

In a large casserole dish, layer half of the roasted vegetables, followed by dollops of ricotta cheese and a sprinkle of mozzarella. Repeat with the remaining vegetables and top with the remaining mozzarella and Parmesan cheese.

Bake the Casserole

Cover the casserole with aluminum foil and bake for 20 minutes. Remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden brown.

Serve and Enjoy

Allow the casserole to cool for a few minutes before serving. Pair with crusty bread or a fresh salad for a complete meal.

Enjoy your delicious homemade vegetable casserole!

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Pro Tips

  • For a spicier kick, consider adding crushed red pepper to the vegetable mix. You can also substitute vegetables based on what's in season or your personal preferences.

Serving Suggestions

This casserole pairs wonderfully with crusty bread, allowing you to scoop up the cheesy goodness easily. A light salad with a balsamic vinaigrette can complement the richness of the dish beautifully, offering a refreshing contrast. For a heartier meal, serve it alongside quinoa or rice, which can absorb any extra cheese sauce left on the plate.

If you're feeling adventurous, transform this dish into a breakfast option by serving it with a poached egg on top. The creamy yolk adds another layer of richness and enhances the overall flavor profile, making it a satisfying brunch choice.

Variations to Try

Feel free to adjust the spice levels based on your taste. Adding a pinch of red pepper flakes or some chopped jalapeños can introduce a spicy kick, perfect for those who enjoy heat. Alternatively, swap out the thyme and oregano for fresh rosemary or dill to change the flavor profile entirely, giving it a Mediterranean or hearty fall feel.

For a protein boost, consider including cooked chicken or chickpeas mixed in with the vegetables. This not only adds nutritional value but also makes the casserole more filling. Just remember to adjust the seasoning accordingly to enhance the flavors of the added protein.

Questions About Recipes

→ Can I make this casserole ahead of time?

Yes! You can prepare the casserole a day in advance and refrigerate it. Just bake it when you're ready to serve.

→ What other vegetables can I use?

Feel free to swap in your favorites! Asparagus, spinach, or kale would all work beautifully.

→ Can I freeze the casserole?

Absolutely! Just make sure to cover it well. It can be stored in the freezer for up to three months.

→ Is this recipe vegetarian?

Yes, this casserole is completely vegetarian and packed with wholesome ingredients.

Sunday Baked Vegetable Casserole

I absolutely love making a Sunday Baked Vegetable Casserole, and it has quickly become a cherished family favorite. The vibrant colors of the fresh vegetables combined with the creamy cheese sauce create a dish that's not only delicious but also visually appealing. This casserole is versatile, allowing me to use whatever vegetables I have on hand, making it a go-to recipe for meal prep. I enjoy serving it alongside crusty bread or a simple salad, transforming a busy Sunday into a delightful feast with minimal effort.

Prep Time20 minutes
Cooking Duration40 minutes
Overall Time60 minutes

Created by: Brittany Shaw

Recipe Type: Baking & Desserts

Skill Level: Intermediate

Final Quantity: 6 servings

What You'll Need

Ingredients for Casserole

  1. 1 zucchini, sliced
  2. 1 bell pepper, diced
  3. 1 onion, chopped
  4. 2 cups broccoli florets
  5. 2 cups mushrooms, sliced
  6. 1 cup cherry tomatoes, halved
  7. 2 cloves garlic, minced
  8. 1 teaspoon dried oregano
  9. 1 teaspoon dried thyme
  10. Salt and pepper to taste
  11. 2 cups shredded mozzarella cheese
  12. 1 cup ricotta cheese
  13. 1/2 cup grated Parmesan cheese
  14. 2 tablespoons olive oil

How-To Steps

Step 01

Preheat your oven to 400°F (200°C). In a large bowl, combine the zucchini, bell pepper, onion, broccoli, mushrooms, cherry tomatoes, garlic, oregano, thyme, salt, and pepper. Drizzle with olive oil and toss to coat evenly.

Step 02

Spread the vegetable mixture on a baking sheet in a single layer. Roast in the preheated oven for about 20 minutes, or until the vegetables are tender and slightly caramelized.

Step 03

In a large casserole dish, layer half of the roasted vegetables, followed by dollops of ricotta cheese and a sprinkle of mozzarella. Repeat with the remaining vegetables and top with the remaining mozzarella and Parmesan cheese.

Step 04

Cover the casserole with aluminum foil and bake for 20 minutes. Remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden brown.

Step 05

Allow the casserole to cool for a few minutes before serving. Pair with crusty bread or a fresh salad for a complete meal.

Extra Tips

  1. For a spicier kick, consider adding crushed red pepper to the vegetable mix. You can also substitute vegetables based on what's in season or your personal preferences.

Nutritional Breakdown (Per Serving)

  • Calories: 280 kcal
  • Total Fat: 18g
  • Saturated Fat: 10g
  • Cholesterol: 50mg
  • Sodium: 450mg
  • Total Carbohydrates: 24g
  • Dietary Fiber: 4g
  • Sugars: 5g
  • Protein: 12g