HomeSide DishesYellow Squash Casserole

Yellow Squash Casserole

Yellow Squash Casserole is creamy and cheesy with a buttery and crispy Ritz cracker topping. It makes a delicious side dish.

  • Prep15 min
  • Cook30 min
  • Total45 min
  • Serves6 servings
  • Rating4.9
Yellow Squash Casserole

Yellow Squash Casserole is creamy and cheesy with a buttery and crispy Ritz cracker topping. It makes a delicious side dish and is perfect for using fresh summer squash.

Yellow Squash Casserole in white square baking dish.

Yellow Squash Casserole with lots of cheddar cheese and a buttery cracker crumb topping is one of my favorite casseroles to make during the summer months. It’s super creamy with tender slices of summer squash and onion. A combination of mayonnaise and sour cream gives it plenty of creamy flavor.

I love a squash casserole so much, I make multiple versions. While this one is my go to, I also love Pimento Cheese Squash Casserole, Squash Casserole with Stuffing Top, and Squash, Zucchini, and Corn Casserole.

Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week!Please enable JavaScript in your browser to complete this form.Name *Email *

Serve Yellow Squash Casserole at a summer potluck or as a comforting side dish for a family meal. I love it with fried chicken. Actually, I think I love everything with fried chicken. 🙂

This recipe also makes a great holiday side. My som requests it every Thanksgiving and Christmas.

Yellow squash is plentiful at farmers markets in the south during the summer months and it is easily grown in a home garden so I tend to make this casserole frequently during the summer months. But a creamy casserole like this is also extremely comforting during the cooler months.

Yellow Squash Casserole in square baking dish.

How To Serve

(More detailed instructions and video in recipe card below.)

  1. Steam the squash and onion until tender. Season with salt and pepper.
    Steaming the squash.
  2. Mix together egg, mayonnaise, sour cream, and milk.
    Mayonnaise mixture.
  3. Stir in cheese, squash, and onion. Transfer to baking dish.
  4. Scatter crushed crackers on top and drizzle with melted butter.
  5. Bake for 30 minutes.
  6. Yellow Squash Casserole Recipe Tip

    This casserole is really easy to make. You do want to precook the squash some because you don’t want it to be crunchy at all in the finished casserole. You can either slice it and sauté it, steam it, or even microwave it until just tender.

    ★★★★★
    What readers are saying

    This is so easy to make! The taste will take back to grandma’s with family all around eating, laughing and good food.

    Make Ahead and Storage Suggestions

    This recipe can be prepared through Step 5 a day in advance and refrigerated. Leftovers can be stored in an airtight container in the refrigerator for 4 days.

    Spoon scooping squash casserole out of baking dish.

    More Southern Casseroles

    Pin this now to find it later

    Originally posted May 28, 2016.

    Disclosure: This post contains affiliate links.

Ingredients

Steps

  1. 1

    Preheat oven to 350 degrees and lightly grease a casserole dish.

  2. 2

    Steam squash and onion until just tender, about 5 to 7 minutes.

  3. 3

    Season squash and onion with salt and pepper.

  4. 4

    In a large bowl, whisk together egg, mayonnaise, sour cream, and milk.

  5. 5

    Stir in cheese, squash and onion. Transfer mixture to casserole dish.

  6. 6

    Crush crackers and scatter on top of squash. Drizzle with melted butter.

  7. 7

    Bake for 30 minutes.

Nutrition

  • Calories303
  • Carbs15
  • Protein9
  • Fat24
  • Sodium340
  • Fiber2
  • Sugar6