Sunday Baked Vegetable Casserole

Name: Sunday Baked Vegetable Casserole
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Yield: 6 servings
Ingredients: 1 cup chopped zucchini; 1 cup chopped bell peppers; 1 cup chopped mushrooms; 1 cup chopped spinach; 1 cup chopped broccoli; 2 cups shredded mozzarella cheese; 1 cup ricotta cheese; 1 tablespoon olive oil; 2 cloves garlic, minced; 1 teaspoon dried oregano; Salt and pepper to taste; 1 cup breadcrumbs

Highlighted under: Baking & Desserts

I love making this Sunday Baked Vegetable Casserole for my family as it brings everyone together around the dinner table. The mix of colorful vegetables, herbs, and gooey cheese creates a delightful harmony of flavors that I can’t resist. It’s not only a delicious option for a hearty meal, but it also lets me showcase my love for fresh produce. Plus, the fact that I can prepare this dish in advance makes it a go-to for any weekend gathering.

Created by

Anya Coleman

Last updated on 2026-01-13T21:07:12.255Z

When I first decided to make this casserole, I wanted to use seasonal vegetables to really capture the essence of Sunday dinners in the fall. I experimented with different combinations and discovered that roasting the veggies beforehand not only enhances their flavors but also adds a wonderful texture to the dish.

One of my favorite tips is to layer the ingredients thoughtfully; this ensures that every bite is equally delightful. The bubbling cheese on top creates a crispy layer that beautifully contrasts with the tender veggies underneath, making it a feast for both the eyes and the palate.

        Why You'll Love This Recipe
        A vibrant mix of seasonal vegetables bursting with flavor
Creamy cheese pulls that make each serving irresistible
Perfect for meal prep and family gatherings

      

Understanding the Vegetable Medley

The choice of vegetables in this casserole is crucial for achieving a balanced flavor profile. Zucchini and bell peppers provide sweetness and moisture, while mushrooms add an earthy depth. Spinach and broccoli contribute necessary greens and nutrients. If you're looking for substitutions, feel free to swap in seasonal veggies like asparagus or cherry tomatoes, which can also enhance the dish’s taste and texture. Just keep in mind that denser vegetables may require a longer roasting time to ensure tenderness.

Another aspect to consider is the freshness of your vegetables. Using locally sourced or in-season produce can elevate your casserole’s flavor. Aim for vibrant colors and firm textures when selecting your ingredients; soft or wilted veggies won't offer the same satisfying bite. If you're short on time, pre-chopped vegetables can work in a pinch, but always give them a quick rinse and dry to remove excess moisture that can dilute flavors during roasting.

Mastering the Cheese Layers

The combination of ricotta and mozzarella is what makes this casserole creamy and indulgent. Ricotta cheese adds a smooth richness that contrasts beautifully with the gooey, melt-in-your-mouth mozzarella. For a twist, consider adding a sprinkle of grated Parmesan between the layers for an extra savory kick. To make this dish lighter, you could opt for part-skim ricotta or even cottage cheese, though the texture will slightly differ.

Ensure your mozzarella is shredded right before layering for the best melt. Pre-shredded cheese often contains additives that prevent clumping but can impede its ability to melt smoothly. If you find the casserole too runny after baking, it might mean your veggies released too much moisture. In this case, simply allow it to sit for an additional few minutes before serving, which helps it firm up.

Ingredients

Vegetable Mixture

1 cup chopped zucchini
1 cup chopped bell peppers
1 cup chopped mushrooms
1 cup chopped spinach
1 cup chopped broccoli

Casserole Ingredients

2 cups shredded mozzarella cheese
1 cup ricotta cheese
1 tablespoon olive oil
2 cloves garlic, minced
1 teaspoon dried oregano
Salt and pepper to taste
1 cup breadcrumbs

Instructions

Preheat the Oven

Preheat your oven to 375°F (190°C).

Prepare the Vegetables

In a large bowl, combine the chopped zucchini, bell peppers, mushrooms, spinach, and broccoli. Drizzle with olive oil and add minced garlic, oregano, salt, and pepper. Toss until well coated.

Roast the Vegetables

Spread the vegetable mixture on a baking sheet and roast in the preheated oven for about 15 minutes until they are tender.

Layer the Casserole

In a greased baking dish, layer half of the roasted vegetables, followed by half of the ricotta cheese, and then half of the mozzarella cheese. Repeat the layers with the remaining vegetables and cheeses.

Add Breadcrumbs

Sprinkle the breadcrumbs evenly on top of the final cheese layer.

Bake

Bake in the oven for 25-30 minutes, or until the top is golden and bubbly.

Cool and Serve

Let the casserole cool for a few minutes before serving. Enjoy your delicious vegetable medley!

Pro Tips

For extra flavor, consider adding fresh herbs such as basil or thyme. Pair this casserole with a simple salad for a complete meal.

Make-Ahead Tips

One of the best qualities of this casserole is how well it keeps. You can prepare everything up to the baking step one day in advance. Just layer the ingredients in your greased baking dish, cover it with foil, and refrigerate until you're ready to bake. This makes it an outstanding option for busy weekends or unexpected guests, allowing flavors to meld beautifully overnight.

If you're looking to freeze it for a later occasion, prepare it in a freezer-safe dish and cover it tightly with plastic wrap and foil. It can be frozen for up to 2 months. When ready to eat, thaw it in the refrigerator overnight and bake as directed, possibly adding a few extra minutes to the baking time.

Serving Suggestions

This baked vegetable casserole makes for a hearty main dish, but it pairs excellently with a simple salad or some crusty bread to soak up the flavors. You can also serve it as a side with roasted meats or grilled fish, as its fresh flavors complement proteins remarkably well. A sprinkle of fresh herbs like basil or parsley on top before serving will add a burst of color and freshness.

For a fun twist, you might even want to transform this casserole into a breakfast option. Consider adding beaten eggs to the cheese mixture before layering it, allowing the casserole to set as it bakes. This adds a lovely fluffiness and makes for a delightful brunch dish with a side of fruit.

Questions About Recipes

→ Can I use frozen vegetables?

Yes, but make sure to thaw and drain them before using to avoid excess moisture.

→ Can I make this casserole ahead of time?

Absolutely! You can assemble the casserole a day in advance and bake it when ready to serve.

→ What can I substitute for ricotta cheese?

You can use cottage cheese or cream cheese as a substitute if desired.

→ How can I make this recipe vegan?

Use plant-based cheese and omit the ricotta cheese, or substitute it with a vegan ricotta alternative.