Look no further, because this is truly The Best Squash Casserole recipe you'll ever taste. It has everything you love without the added preservatives, and the flavor is amazing!
Jump To
Why This Recipe is Best
Southern Squash Casserole is a classic dish that has been around a long time. Most folks like to use cream of mushroom soup to make it, but I promise you'll love this new version that has no MSG or artificial ingredients!
The addition of sour cream, along with mayonnaise and eggs, creates a custard consistency that is made even better by including two cheeses.
I know you've been making this dish for years, but y'all...this recipe is worth a second look. Folks tell me they'll never go back to the old way of making it after trying this version!
Ingredients
This recipe is so easy to put together, it will be ready to pop in the oven in just 15 minutes!
Squash
- butter
- yellow squash, quartered and diced
- sweet onion, diced
- garlic salt
Filling
- sour cream
- mayonnaise
- sharp cheddar cheese, shredded
- parmesan cheese, shredded
- eggs
Topping
- butter, melted
- Ritz crackers, crushed
- french fried onions, crushed
Instructions
Add squash, onion, and garlic salt to a skillet. Saute' for 10 minutes over medium heat until tender. Take off heat.
Fold in sour cream, mayonnaise, cheddar and parmesan to the skillet. Stir well. Beat eggs and mix well with filling. Pour contents into a 13 X 9 inch casserole dish.
In a separate bowl, melt butter in microwave. Crush crackers and french fried onions in a large baggie, then mix with melted butter in bowl.
Sprinkle cracker mixture over squash casserole. Bake for 30 minutes until topping is golden brown and filling is bubbly.
Saute squash with onions 
Add filling ingredients Mix in eggs 
Transfer to baking dish
Recipe FAQS
Yellow squash is the best squash to use in a casserole because the seeds are tender and do not have to be removed. You can also eat the skin, which makes yellow squash a great choice for this recipe.
Any type of meat tastes great alongside this dish. Try pork tenderloin, glazed ham, pot roast, and fried chicken to name a few!
It sure can! Just make sure you freeze squash casserole after it's been cooked. It freezes well for up to 3 months in an airtight container.
Expert Tips
- Sautéing onions and squash in butter gives this dish its robust flavor.
- Adding a dash of garlic salt to the squash while sautéing adds depth.
- Use two cheeses for best results. Make sure one of them is parmesan.
- Feel free to substitute zucchini for squash if you wish, but the flavor will change.
More Casseroles to Love
Casseroles are a southern way of life! Check out these other amazing dishes that go well with just about anything!
- Vidalia Onion Casserole
- Broccoli Cheese Casserole
- Sweet Potato Casserole
- Loaded Hash Brown Casserole
- Skillet Green Bean Casserole
Recipe Card
The Best Squash Casserole
- Total Time: 45 minutes
- Yield: 8 1x
- Diet: Vegetarian
Description
Creamy squash casserole has to be one of the best comfort foods ever! It's filled with sautéed squash, onions, parmesan, cheddar, sour cream and a little mayo. A true southern delight!
Ingredients
SQUASH
- 2 tablespoon. butter
- 3 large yellow squash, quartered and diced
- 1 small sweet onion, diced
- ½ teaspoon garlic salt with parsley
FILLING
- 1 cup sour cream
- ½ cup mayonnaise (I use Duke's)
- 8 oz. pkg. sharp cheddar cheese, shredded
- 1 cup parmesan cheese, shredded
- 2 eggs, beaten
TOPPING
- ¼ stick butter, melted
- 1 sleeve Ritz crackers, crushed
- ½ cup french fried onions, crushed
Instructions
- Preheat oven to 350 degrees.
- Melt butter in skillet. Add squash, onion, and garlic salt.
- Saute' for 10 minutes over medium heat until tender. Take off heat.
- Add sour cream, mayonnaise, cheddar and parmesan to the skillet. Stir well.
- Beat 2 eggs and mix well with filling.
- Pour contents of skillet into a large casserole dish.
- In a separate bowl, melt butter in microwave.
- Crush crackers and french fried onions in a large baggie and mix with melted butter in bowl.
- Sprinkle cracker mixture over squash casserole.
- Bake for 30 minutes until topping is golden brown.
Notes
Squash casserole pairs well with fried chicken, pork tenderloin and glazed ham.
Use two cheeses for best results. Make sure one of them is parmesan.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Side Dishes
- Method: Skillet, Oven
- Cuisine: Casserole
Keywords: squash casserole, best squash casserole, side dishes
Sharing is Caring! If you love my recipes, please share with friends! Also, check out Quiche My Grits recipes on Weekend Potluck every Friday.
camt69
This looks delicious!
Debi
Thanks Carol! It is one of my favs. 🙂
KH
Had this today and it was delicious! My husband that does not like vegetables gobbled it up!
Rebecca Doody
Do you take the seeds out of the squash?
Debi
Hi Becky. Great question! 🙂 Since this squash is of the yellow variety, the seeds are very soft and edible, so it's not necessary to remove them.
Connie Jones
I made this and it was great! What I especially liked is that I could just make it for 2 people. The Parmesan cheese was the kicker that really made this dish! Took a squash to a new level!
★★★★★
Debi
Yay! It's definitely one of my favorite recipes. 🙂
Lou Ellen Jones
Made squash casserole, my family loved it. This is a keeper for sure!
★★★★★
Debi
I'm so glad you liked it, Lou Ellen! We love it too! 🙂
Julia
Literally the best squash casserole I've ever had.
★★★★★
Debi
Wow, Julia! You made my day! So glad you loved it. Thanks so much for taking the time to leave a comment. 🙂
Michelle
This really is the best squash casserole!!
★★★★★
Debi
Thanks Michelle! I love it too! 🙂
Christina G Hobson
This is delicious!!!!
★★★★★
Angie | Big Bears Wife
This reminds me of my papa! I love it! Thanks for linking it up to Meal Plan Monday this week!
Debi
Squash casserole reminds me of my Granny too. It takes you back, doesn't it?