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: 2 cups of diced tomatoes; 1 cup of heavy cream; 1 cup of chopped spinach; 1 cup of diced zucchini; 1 cup of sliced bell peppers; 1 onion, chopped; 2 cloves of garlic, minced; 1 teaspoon of dried oregano; 1 teaspoon of basil; Salt and pepper to taste; 2 cups of shredded mozzarella cheese; 1 cup of breadcrumbs; 2 tablespoons of olive oil

Highlighted under: Oven Planning

I love making this Sunday Creamy Tomato Vegetable Casserole for my family. It's a delightful blend of flavors that warms the soul, and I take pride in knowing that it provides a nutritious meal without sacrificing taste. The creamy tomato sauce pairs perfectly with seasonal vegetables, creating a comforting dish that everyone looks forward to each week. This casserole not only feeds the body but also nourishes the spirit, making it perfect for family gatherings or a cozy dinner at home.

Created by

Violet Kingsley

Last updated on 2026-01-14T03:21:34.424Z

When I first tried the Sunday Creamy Tomato Vegetable Casserole, I was surprised by how easy it was to create such a delicious meal. By using fresh vegetables and a homemade creamy tomato sauce, I was able to make a dish that feels indulgent but is healthy. I learned that roasting the vegetables before adding them to the casserole enhances their flavor and adds depth to the overall dish.

Over time, I experimented with different vegetable combinations and toppings. I discovered that adding a sprinkle of fresh basil before serving elevates the casserole from good to extraordinary. This little tip transformed what is already a beloved recipe into something truly special in our home.

        Why You'll Love This Recipe
        Deliciously creamy sauce with a vibrant tomato flavor.
Loaded with fresh vegetables for a healthy twist.
Perfectly comforting and satisfying for any family meal.

      

Understanding the Ingredients

The cornerstone of the Sunday Creamy Tomato Vegetable Casserole is the combination of seasonal vegetables. Zucchini and bell peppers not only offer vibrant color but also a subtle sweetness that complements the acidity of the tomatoes. Using fresh, ripe tomatoes elevates the dish, as their natural sugars and flavor create a rich base. If fresh tomatoes aren’t available, canned diced tomatoes are an excellent substitute, providing a consistent texture and flavor year-round.

Heavy cream plays a vital role in achieving that luscious, creamy texture in the sauce. If you want to lighten the dish without sacrificing creaminess, consider substituting half-and-half or a plant-based cream like coconut cream. However, keep in mind that using a milk substitute may alter the flavor slightly and might require additional herbs or spices to enhance the overall taste.

Perfecting the Cooking Process

When sautéing the onions and garlic, it's important to monitor the heat to prevent burning. Medium heat is ideal; watch for the onions to turn translucent, which indicates that they are ready for the next ingredients. If they start to brown too quickly, reduce the heat; burnt garlic can impart a bitter flavor to the dish. Always stir frequently during this stage to ensure even cooking.

Assembling the casserole is where you can get creative; layering cheeses between the vegetable mixture can enhance the melty texture. Make sure to evenly distribute the mozzarella on top for a bubbly, golden crust once baked. You can also add grated Parmesan for an extra depth of flavor. For a crunchier topping, broil the casserole for an additional 2-3 minutes at the end, but remain vigilant to avoid burning.

Ingredients

Gather the following ingredients to make this delightful casserole:

Ingredients

2 cups of diced tomatoes
1 cup of heavy cream
1 cup of chopped spinach
1 cup of diced zucchini
1 cup of sliced bell peppers
1 onion, chopped
2 cloves of garlic, minced
1 teaspoon of dried oregano
1 teaspoon of basil
Salt and pepper to taste
2 cups of shredded mozzarella cheese
1 cup of breadcrumbs
2 tablespoons of olive oil

Make sure to have everything ready before you start assembling the casserole.

Instructions

Follow these steps to create your creamy casserole:

Prepare the Vegetables

In a large skillet, heat olive oil over medium heat. Add the onions and garlic, sautéing until they are translucent. Add the zucchini and bell peppers, cooking until tender. Stir in the spinach and diced tomatoes, cooking for an additional 5 minutes.

Make the Sauce

In a separate bowl, mix the heavy cream with oregano, basil, salt, and pepper. Stir this sauce into the vegetable mixture until well combined.

Assemble the Casserole

Preheat your oven to 375°F (190°C). In a greased baking dish, layer the vegetable mixture, then top it with shredded mozzarella cheese and breadcrumbs.

Bake the Casserole

Bake in the preheated oven for 30 minutes, or until the top is golden brown and bubbly.

Serve and Enjoy

Allow the casserole to cool for a few minutes before serving. Garnish with fresh basil if desired.

This casserole is best enjoyed warm and can easily be reheated for leftovers!

Pro Tips

For extra flavor, try adding your favorite herbs or spices to the cheese topping before baking.

Make-Ahead and Storage Tips

This casserole is perfect for meal prep; you can assemble it a day in advance and store it covered in the refrigerator. Just be sure to add the breadcrumbs just before baking to maintain their texture. If you opt to freeze, allow the casserole to cool completely before wrapping it tightly in plastic wrap and aluminum foil. It can be stored in the freezer for up to three months; simply thaw in the refrigerator overnight before baking.

Reheating is simple; just cover with foil to prevent the top from burning, and bake at 350°F (175°C) for about 20-25 minutes, or until heated through. If you prefer, individual portions can be microwaved, but be mindful that the texture may change slightly.

Serving Suggestions

This creamy casserole pairs beautifully with a crisp side salad or some crusty bread to soak up the delicious sauce. For a heartier meal, consider serving it alongside grilled chicken or fish for a balanced dinner. You might also add a sprinkle of fresh herbs like basil or parsley on top for a pop of color and flavor right before serving.

With the flexibility of ingredients, feel free to incorporate whatever vegetables you have on hand. Carrots, mushrooms, or broccoli work wonderfully in this casserole. Experimenting with different combinations can introduce new flavors and keep the dish exciting week after week.

Questions About Recipes

→ Can I use different vegetables?

Absolutely! Feel free to customize this casserole with your favorite vegetables, such as broccoli or carrots.

→ Can this casserole be made ahead of time?

Yes! You can prepare the casserole a day ahead, store it in the fridge, and bake it when you're ready to serve.

→ Is there a vegan option for this recipe?

You can substitute heavy cream with coconut cream and use vegan cheese for a delicious vegan version of this casserole.

→ How long does the casserole last in the fridge?

Leftovers can be stored in an airtight container in the fridge for up to 3 days.