Squash, Zucchini and Tomato Casserole

This easy and delicious Squash, Zucchini and Tomato Casserole is the perfect summer side dish to any meal. Filled with sliced vegetables topped with lots of seasonings and shredded Parmesan cheese and baked to perfection!

Fresh summer vegetables from your garden or your local Farmer's Market make this dish extra special. It's so easy to make and tastes amazing!

Jump to:

• What to Serve with Squash, Zucchini and Tomato Casserole
• Ingredients
• How To Make Squash, Zucchini and Tomato Casserole
• How To Store Leftovers
• Substitutions and Variations
• Casserole Recipe FAQs
• Easy Side Dishes To Make
• Squash, Zucchini and Tomato Bake Recipe

If you have an abundance of Zucchini from your garden this is a great way to use them combined with other vegetables for a delicious mix of flavors. Another great recipe to try is this Oven Roasted Zucchini And Squash.

This casserole is easy to make with only ten minutes of prep time and it's ready for the oven. Slice your vegetables, add seasonings and top with olive oil and Parmesan cheese.

You get the perfect combination of flavors in this simple summer vegetable dish and every one will love it. Nothing says summer more than zucchini, squash and tomatoes.

It's such an impressive side dish to serve guests with the beautiful combination of yellow, green and red colors. 

This fresh summer casserole is the perfect side dish for your summer BBQs and potlucks. It's also easy to make and take to any social event and it's always a hit.

What to Serve with Squash, Zucchini and Tomato Casserole

This vegetable casserole makes a delicious side dish to almost any meal and we especially love to serve it when we are grilling.

Here are two of our favorite grilled recipes that go great with this casserole:

• Grilled Strip Steak With Homemade Marinade
• Hawaiian Chicken Kabobs With Homemade Marinade Sauce

I love tomatoes and they pair so well with the zucchini and squash. If I have leftovers I love reheating them and eating it on top of rice. Such a quick lunch and so good!

Ingredients

See printable recipe card below for all ingredients, specific measurements, and complete instructions.

• Zucchini, Yellow Squash and Tomatoes - Wash and slice your vegetables evenly.
• Seasonings - You will need salt, black pepper, garlic powder, dried oregano and dried basil to add more flavor to the dish.
• Olive Oil - I recommend using Extra Virgin Olive Oil.
• Shredded Parmesan Cheese - Use freshly grated Parmesan Cheese.

How To Make Squash, Zucchini and Tomato Casserole

1. Preheat oven to 350 degrees. Spray a square baking dish with non-stick cooking spray.
2. Lay sliced vegetables on a flat surface.

3. Mix dry seasonings together and sprinkle over vegetables.

4. Stack vegetables, alternating zucchini, yellow squash, and tomato, and stand in the baking dish creating three to four rows.

5. Drizzle olive oil over the vegetables and top with Parmesan cheese.

6. Bake for 30 to 45 minutes depending on desired tenderness.

How To Store Leftovers

Store any leftovers in an airtight container in the refrigerator for up to 2 days. I don't recommend freezing this dish.

Substitutions and Variations

• Cheese: You can use mozzarella cheese instead of Parmesan cheese.
• Bread Crumbs: Add a panko breadcrumb topping or for a little crunch you could add a buttery Ritz cracker topping.
• Vegetables: Don't like squash? No problem you can leave that out and only include the zucchini and tomatoes.

Casserole Recipe FAQs

Helpful Items For Your Kitchen

If you are looking to update some of your basic kitchen items here are a few items that I recommend and use in my kitchen that are helpful when cooking or baking. (Affiliate links).

• I have used Pyrex baking dishes for years and they hold up well. This square baking dish is perfect for making this casserole.
• This is a great 4-piece silicone spatula set and it's perfect for mixing, scooping and scraping your bowls.
• You can't go wrong with the Wilton brand and their medium size baking pan is a great size for baking.

Easy Side Dishes To Make

• Southern Green Beans
• Slow Cooker Cheesy Garlic Mashed Potatoes
• Bacon Ranch Coleslaw
• Cajun Corn On The Cob
• Easy Cheesy Potatoes Casserole

I hope you enjoy this Squash, Zucchini and Tomato Casserole! If you try this recipe, please come back and rate it and leave me a comment below. I love to hear from you!