Sunday Creamy Tomato Vegetable Casserole

Name: Sunday Creamy Tomato Vegetable Casserole
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Yield: 6 servings
Ingredients: 3 cups chopped mixed vegetables (zucchini, bell peppers, carrots); 2 cups cherry tomatoes, halved; 1 can (15 oz) crushed tomatoes; 1 cup heavy cream; 1 teaspoon dried oregano; 1 teaspoon dried basil; Salt and pepper to taste; 1 cup shredded mozzarella cheese; 1/2 cup grated Parmesan cheese; 2 tablespoons olive oil

Highlighted under: Rustic Favorites

I love discovering new ways to incorporate fresh vegetables into my meals, and this Sunday Creamy Tomato Vegetable Casserole has become a family favorite. The richness of the creamy tomato sauce combined with vibrant veggies makes every bite a delight. It’s perfect for a cozy weekend dinner or when you’re hosting friends. In just a little over an hour, I can whip up this comforting dish that not only tastes fantastic but also looks impressive when served at the table. Trust me, your taste buds will thank you!

Created by

Maeve Colchester

Last updated on 2026-01-14T01:37:34.617Z

When I first made this casserole, I was looking for a dish that could use up some vegetable leftovers I had in the fridge. This recipe turned out to be a fantastic way to blend different flavors and textures while keeping it simple. The creamy consistency of the tomato sauce, paired with fresh herbs, creates an irresistible aroma that fills the kitchen!

I discovered that using a mix of colorful vegetables not only enhances the dish's nutritional profile but also makes it visually appealing. I recommend adding some chopped fresh basil right before serving for an extra layer of flavor that elevates every bite!

        Why You'll Love This Recipe
        Creamy tomato sauce that comforts your soul
A rainbow of fresh vegetables for a nutritious boost
Great for meal prep or feeding a crowd
Ideal for a comforting family dinner

      

Choosing the Right Vegetables

When it comes to the mixed vegetables in this casserole, versatility is key. Zucchini, bell peppers, and carrots are great choices, but feel free to explore other options like spinach, mushrooms, or even broccoli. The key is to ensure that whatever vegetables you choose are chopped into similar sizes, which promotes even cooking. If you notice that some veggies are more watery than others—like zucchini—consider salting them lightly and letting them sit for about 10 minutes before cooking. This will help to remove excess moisture and prevent the casserole from becoming soggy.

Keep in mind that seasonal vegetables can enhance the flavor profile of your dish. For instance, swapping in fresh asparagus in spring or butternut squash in the fall can add new dimensions to the casserole. Each vegetable brings its own unique flavor and texture, so mix and match according to your preferences or what you have on hand.

Texture and Flavor Techniques

Sautéing the mixed vegetables before adding them to the casserole allows them to release their flavors fully, creating a robust base for your creamy tomato sauce. Aim for just enough time until they begin to soften but not lose their crunch, around 5 minutes. This sautéing step is crucial as it adds depth to the overall flavor. If you'd like a caramelized finish, let the vegetables go a bit longer until they start to brown slightly, which adds a nice richness to the dish.

Don't overlook the importance of seasoning. Salt and pepper can significantly enhance the flavors, so be generous but taste as you go. You can also consider adding a pinch of red pepper flakes for a subtle kick or a dash of balsamic vinegar for additional complexity. Balancing the acidity of the tomatoes with the cream and cheese creates a well-rounded flavor profile that keeps each bite interesting.

Make-Ahead Suggestions

One of the great things about the Sunday Creamy Tomato Vegetable Casserole is that it can be made ahead of time. You can prepare the entire dish up to the baking stage and refrigerate it for up to 24 hours. This not only saves time on a busy day but also allows the flavors to meld even more, resulting in an even tastier casserole. Simply cover it with plastic wrap or foil and store in the fridge. When you're ready to bake, remove the cover and let it come to room temperature for about 20 minutes before placing it in the oven.

If you're looking to make this dish even more convenient, consider freezing leftovers. Once baked, allow the casserole to cool completely, then portion it into freezer-safe containers. It can be stored for up to three months. To reheat, simply thaw overnight in the refrigerator and bake at 350°F (175°C) until warmed through, about 20-30 minutes. This makes for a quick meal solution on busy weeknights!

Ingredients

Gather these fresh ingredients to create a delightful casserole.

Casserole Ingredients

3 cups chopped mixed vegetables (zucchini, bell peppers, carrots)
2 cups cherry tomatoes, halved
1 can (15 oz) crushed tomatoes
1 cup heavy cream
1 teaspoon dried oregano
1 teaspoon dried basil
Salt and pepper to taste
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
2 tablespoons olive oil

Make sure to mix everything well for a perfect blend of flavors.

Instructions

Follow these simple steps to create your delicious casserole.

Preheat and Prepare

Preheat your oven to 375°F (190°C). In a large skillet, heat the olive oil over medium heat. Add the chopped mixed vegetables and sauté for about 5 minutes until they start to soften.

Combine Ingredients

Stir in the halved cherry tomatoes, crushed tomatoes, heavy cream, oregano, basil, salt, and pepper. Let the mixture simmer for 10 minutes, allowing the flavors to meld.

Assemble the Casserole

Transfer the mixture to a greased baking dish. Sprinkle the mozzarella and Parmesan cheeses evenly on top.

Bake

Place the baking dish in the preheated oven and bake for 30 minutes, or until the cheese is bubbly and golden brown.

Serve

Remove from the oven and let it cool for a few minutes before serving. Enjoy your comforting casserole!

Pair this casserole with some crusty bread for a truly satisfying meal.

Pro Tips

For extra depth of flavor, feel free to add some garlic or onions while sautéing the vegetables. Fresh herbs can also enhance the taste significantly.

Ingredient Variations

While the classic combination of heavy cream and cheeses creates a luscious texture, you can easily swap out the heavy cream for a lighter option like Greek yogurt or coconut cream if you're aiming for a lighter or dairy-free version. Just keep in mind that the flavor will change slightly, but it will still be delicious. You can also try using a vegan cheese blend on top for a dairy-free alternative that melts well.

In addition to the vegetable choices, consider experimenting with different types of cheese. Cheddar, gouda, or even a spicy pepper jack can provide a unique twist. Mixing cheeses can also create a more complex flavor profile, so don't hesitate to explore what you have available in your pantry.

Serving Suggestions

This casserole pairs wonderfully with a crisp side salad or some crusty bread for a complete meal. To elevate your presentation, garnish the final dish with fresh herbs like basil or parsley before serving. They not only add a pop of color but also freshen up the creamy flavors of the casserole, enhancing every bite.

You can also serve this dish as a main course or a side option. If you have any leftover casserole, consider repurposing it by adding it to omelets or as a filling for stuffed peppers. Getting creative with leftovers can breathe new life into the dish while minimizing waste!

Troubleshooting Common Issues

If you find your casserole is too watery after baking, it may be due to the moisture content in your vegetables. To remedy this, you can drain excess liquid before adding the cheese topping, or if you're making it ahead of time, be sure to use less watery vegetables and think about precooking them to remove moisture. A slight sprinkle of cornstarch can also help thicken the sauce if necessary.

On the other hand, if the cheese isn't browning as you'd like, consider broiling for the last few minutes of baking. Just keep a close eye on it to avoid burning, and this will ensure a beautifully golden top that contrasts nicely with the creamy interior of your casserole.

Questions About Recipes

→ Can I prepare this casserole ahead of time?

Yes, you can prepare the casserole the day before and store it in the fridge. Just bake it right before serving.

→ What vegetables work best in this recipe?

You can use any mix of vegetables you enjoy! Some great options are broccoli, spinach, or mushrooms.

→ Can I make this casserole vegetarian?

Absolutely! This recipe is already vegetarian. Just ensure to check your cheese for any animal-derived rennet if strict vegetarianism is your priority.

→ How can I make this dish lighter?

You can substitute the heavy cream with a lighter alternative like half-and-half or a plant-based cream.