Summer Squash Casserole Recipe
This “full-of-the-earth,” Summer Squash Casserole recipe is a delicious garden dump dish full of herbs, zucchini, tomatoes, and cheese!
Layer together harvested zucchini (both green and yellow), or your favorite squash, to make a healthy Summer Squash Casserole. Watch the video to see how easy it is!
Summer Squash Casserole
For our family, a summer meal is often a vegetarian dish! But what I love about this recipe is you can add chicken (or any other leftover meat), and it’s also pasta-free!
Think “garden dump,” which means, what do you have growing in your garden right now? Zucchini, tomatoes, and fresh herbs?
Easy dinner casseroles
If your a lover of easy casseroles for dinner, then this recipe is for you! Layer, bake, and serve! Or, you may even love this Coconut Salmon Zucchini Noodle Bowl Recipe!
Ingredients for squash casserole
All you need for this recipe is:
- Zucchini (yellow and green)
- Fresh cilantro or basil or dill
- Cheese
- Pesto
- Red onion
- Tomatoes
- Salt and pepper
More Zucchini recipes to try:
We love recipes with zucchini, like these Chocolate Zucchini Muffins, Zucchini Black Bean Quesadillas, and Carrot Pineapple Zucchini Bread.
Also, try my friend Gina’s Crustless Summer Zucchini Pie!
Garden Dump Casserole
The casserole is not only pretty, it’s also so good for you! But wait … when you serve it, it’s a little messy. :) It can be a little watery, so use a slotted spoon or spatula to dish it up.
There’s really no right or wrong way to make this–it essentially uses sliced squash in place of pasta.
We’ve even baked this casserole while camping in our Camp Chef Outdoor Camp Oven [affiliate link]. I love this little oven, because it holds a 9×13 pan!
Make ahead at home, and then bake at 400 degrees for 40 minutes (covered with foil).
Seriously, this is our new favorite summer recipe–healthy, starch free, and full of the earth!
ENJOY!

Get the Recipe:
Summer Squash Casserole
Ingredients
- 2-3 medium zucchini, sliced 1/2 inch thick
- 1 medium yellow zucchini, sliced 1/2 inch thick
- Fresh cilantro or basil or dill, chopped (or all 3) – use a lot
- 3 cups cheese, we used Sharp Cheddar
- 1/2 cup pesto
- 1/2 large red onion, sliced
- 3 medium tomatoes, sliced
- Salt and pepper
Instructions
- Preheat oven to 400. Grease or spray a 9×13 pan. Layer the bottom with sliced squash. Spread 1/2 the pesto over the sliced squash, 1/2 of the zucchini slices, 1 cup of cheese, red onion, 1/2 of the fresh herbs, and salt and pepper.
- Repeat above step, ending with sliced tomatoes on top.
- Place a large piece of foil over the pan to seal.
- Bake at 400 for 35-40 minutes, until squash is tender but not overcooked (use a fork to test if it is soft, but do not over cook).
- Remove foil; let sit for 10 minutes before serving.
Notes
Just want you to know, thank you for making the world a better place……….I too am a reluctant entertainer……..but in that you’ve stated that, I don’t feel alone, and I have checked my anxiety that I seem to think I have to have to throw a dinner party………
You have shared and given so much to all of us, and I am sincerely grateful. Sometimes I just whiz through and print your recipes, but I am looking forward to the time when I too will produce these incredible boards.
I’m from Salem and feel akin to you. Living in Lexington , Ky for over 20 years (horses).
Thank you – for the beautiful images and the serenity that you share in having people over. You have enriched all of our lives. ;)
xoxoxo
Can you clarify the cheese amount? I see it shows 1 cup per layer, so thinking it’s 2 cups total, but the ingredient list indicates 3 cups.
Recipe sounds great!
I am just now getting ready to make this and I have become quite good at my own measurements for just two people …….because of your instructions and pictures I will be okay.
Serving this with baked Salmon :)