Yellow Squash and Zucchini Casserole

This Parmesan Squash Casserole is one of my favorite ways to use up our abundance of squash and zucchini in the garden. Beautiful green, yellow and red colors create a vibrant side dish that complements many main meals and my kids love all the cheese layered in this glorious casserole. Plus, it’s so easy to make! You don’t even need to layer everything in like in the picture. Most of the time I just throw all the ingredients in the baking dish since it all tastes the same and it takes less time. I only do the layered look when I am serving it to guests or taking it to a potluck.

Ingredients in Parmesan Squash Casserole

yellow squash (summer squash) zucchini olive oil minced garlic fresh thyme leaves or dried thyme tomatoes large eggs sour cream crumbled feta – (if you don’t like feta you can sub for another cheese like cheddar cheese or mozzarella) grated parmesan cheese lemon juice salt and pepper

Other Ingredient Options

oregano parsley basil onions (white or yellow onion) cream of mushroom soup

Health Benefits of Zucchini and Squash

Besides looking beautiful, zucchini and squash are high in water and fiber. They’re chock full of good things like riboflavin, folate, Vitamin C and potassium. The bottom line is, they’re super good for you! And since they have a mild flavor, you can spice them up a million different ways. You can keep the calorie count low by seasoning them up with salt and pepper and roasting them in the oven, grilling them outside or chopping them up and throwing them in salads. Of course, I like to follow the moderation in all things mantra, so my favorite way to enjoy these veggies is to layer them with cheese and bake. The possibilities are endless!

Add A Cracker Crumb Topping (Optional)

If you prefer your squash casserole to have a crispy buttery cracker topping, you can add some crumbled Ritz crackers or some seasoned bread crumbs over the top before baking. Simply mix about 1 cup of Ritz cracker crumbs (aka buttery round crackers) with ¼ cup grated parmesan cheese and 3 Tablespoons of melted butter. Mix until crumbly and then spread over the top of the squash mixture and bake.

What to Serve with Squash Casserole

This casserole recipe is a perfect side to so many meals. Here are a few of our favorite pairings:

Instant Pot Pork Chops and Gravy Chicken Parmesan Easy Cheesy Manicotti Herb Crusted Salmon Parmesan Herb Baked Mahi Mahi

Rave Reviews for this Squash Casserole Recipe

We are so happy to know this recipe has become a family favorite for many of our readers. Please see the comments below. It really is a crowd-pleaser! It’s been fun to see how fabulous cooks have made substitutions to make it fit the likes and dislikes of the family. One cook said she omitted the tomatoes and replaced it with sausage and it was a hit! This is a recent review we were thrilled to receive:

Crock Pot Pork Chops

Stuffed Pesto Chicken

Miso Glazed Salmon

Tri Tip Roast

“I am the Food Service Director at a Senior Living Community. We have a farm to table program and I was looking for something to use my squash, zucchini and tomatoes. I had a big Block Party event and I wanted to showcase our farm to table dishes. My cooks made this casserole and we ran out of it before we ran out of the Brisket! I must have had 10 people ask me for the recipe. I’m quite seriously thinking about this becoming our “signature” dish!We’re making more tomorrow for the staff because it was such a hit. Thanks!” – Donna READ NEXT: Spaghetti Casserole

More Delicious Squash Recipes

Looking for more recipes to help you use up that extra garden squash and zucchini? Give these a try:

How To Cook Yellow Squash – 4 Easy Ways Oven Roasted Vegetables How to Cook Spaghetti Squash – 4 Easy Methods Pasta Primavera with Chicken

How to Make Parmesan Squash Casserole

Parmesan Squash Casserole

Butternut Squash Soup

Oven Roasted Vegetables

Spaghetti Squash Lasagna

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