Southern Squash Casserole

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Southern Squash Casserole is a classic summer dish perfect for using up all those squash from the garden. This classic casserole is a tasty side dish but is hearty enough to be the main course too!

southern squash casserole on a white plate

Squash is one of my favorite vegetables. Growing up my Grandma would make this Squash Casserole often and I couldn't get enough of it. Cheesy squash filling is topped with a buttery Ritz cracker topping, my mouth is watering just typing about it!

If you like Southern food you might also like my homemade biscuits and sausage gravy, fried green tomatoes, country white gravy, shrimp and grits, or Southern collard greens!

Ingredients

There are so many variations of this recipe, but this is my grandma's version so I'm partial to it. (Full printable recipe at the bottom of the page.)

You will need:

squash
Vidalia onion
cream of mushroom soup
mayonnaise
egg
cheddar cheese
salt and pepper
Ritz crackers
butter

Step by step

ingredients for squash casserole filling in bowl before mixing

Start by slicing the squash into quarter inch pieces.
Then you'll combine everything but the crackers and butter and mix it together.
Pour the mixture over the squash and stir to coat. Make sure you get all that tasty squash covered!
Pour the squash mixture into a casserole dish.

two sleeves of ritz crackers with one crushed for squash casserole

pouring butter into bowl of crushed ritz crackers

Crush the Ritz crackers. I crush mine right in the sleeve (making sure the end doesn't bust open, but you can also place them in a gallon bag and crush them. (The kids love helping with this!) They don't need to be crushed super finely, just enough to crumble.
Put the crumbs in a bowl and pour melted butter over them.
Stir to mix. Sprinkle the cracker over the casserole and bake 35 minutes, then cover with foil for an additional 10 minutes.

Doesn't it look delicious?

You can serve this casserole as a side or main dish, it's hearty enough to fill you up!

Tips for best results

slice the squash evenly so it cooks evenly
if using large squash consider cuting slices into halves or fourths to make bite size pieces
use freshly grated cheese for best melting and flavor

southern squash casserole in a spoon over the rest of the casserole in dish

FAQs

Can I make ahead/freeze this recipe?

This is a great casserole to prep ahead of time and freeze. Simply assemble the casserole without the Ritz crackers, warp well, and freeze unbaked. Thaw overnight in the refrigerator, then let it sit 20 minutes at room temperature before adding cracker mixture to the top just before baking according to recipe instructions.

Can I substitute zucchini for the squash?

Yes, you can use zucchini instead of yellow squash in this casserole. You can also use a combination of both!

How long does this last?

Store in an airtight container in the fridge up to 3 days.

If you try this recipe please comment and rate it below, I love hearing from you!