This easy and delicious Squash, Zucchini, Tomato Casserole is the perfect summer side dish to any meal.
If you have an abundance of Zucchini from your garden this is a great way to use them combined with other vegetables for a tasty mix of flavors.
Squash Zucchini and Tomato Casserole
This delicious Casserole is filled with layers of sliced vegetables topped with lots of seasonings and shredded Parmesan cheese that is baked to perfection!
What to Serve with Squash Zucchini and Tomato Casserole
This casserole recipe makes a delicious side to most meals but whenever we grill out we always serve this casserole.
Here are two of our favorite grilled recipes that go great with this casserole:
Ingredients
2 medium zucchini, sliced evenly
2 medium yellow squash, sliced evenly
3 plum tomatoes, sliced evenly
¼ teaspoon dried oregano
¼ teaspoon dried basil
½ teaspoon salt
¼ teaspoon garlic powder
¼ teaspoon black pepper
2 tablespoons olive oil
½ cup shredded Parmesan cheese
How To Make Squash Zucchini and Tomato Casserole
Preheat oven to 350 degrees. Spray a square baking dish with non-stick cooking spray.
Lay sliced vegetables on a flat surface.
Mix dry seasonings together and sprinkle over vegetables.
Stack vegetables, alternating zucchini, yellow squash, and tomato, and stand in the baking dish creating three to four rows.
Pour olive oil over the vegetables and top with Parmesan cheese.
Bake for 30 to 45 minutes depending on desired tenderness.
Hope you enjoy this delicious summer casserole as much as we do! Please leave a comment if you try it and let me know how you liked it.

Squash Zucchini and Tomato Bake
Ingredients
- 2 medium zucchini, sliced evenly
- 2 medium yellow squash, sliced evenly
- 3 plum tomatoes, sliced evenly
- ¼ tsp dried oregano
- ¼ tsp dried basil
- ¼ tsp garlic powder
- ¼ tsp black pepper
- ½ tsp salt
- 2 tbsp olive oil
- ½ cup shredded Parmesan cheese
Instructions
- Preheat oven to 350 degrees. Spray a square baking dish with non-stick cooking spray.
- Lay sliced vegetables on a flat surface. Mix dry seasonings together and sprinkle over vegetables.
- Stack vegetables, alternating zucchini, yellow squash, and tomato, and stand in the baking dish creating three to four rows.
- Pour olive oil over the vegetables and top with Parmesan cheese.
- Bake for 30 to 45 minutes depending on desired tenderness.
Other Side Dish Recipes You Might Like
Air Fryer Baked Potatoes are tender and fluffy.
Whipped Sweet Potatoes are a simple side dish that’s full of flavor.
Melissa Tyrrell
Tuesday 29th of November 2022
I made this with Italian seasoning,salt,freshly ground pepper,minced garlic and I grated mozzarella cheese instead of parmesan. It turned out fantastic! Next time, I'm going to crumble up some Ritz crackers for topping. Thanks for the recipe!
Lisa
Saturday 8th of October 2022
This is the third time I am making this! A crowd pleaser!
Laura Schutze
Tuesday 13th of July 2021
It would be good to add some bread crumbs and brown it off a little in the last 10 minutes. The parmesan alone was a little whimpy. I would make it a bit "au-gratin". I will try that next time with some of the spices in the topping.
Judy
Monday 2nd of August 2021
Hi Laura, Thank you for sharing. I think bread crumbs would be a great addition to this recipe.