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Summer Squash and Vidalia Onion Casserole

Summer Squash and Vidalia Onion Casserole

Summer Squash and Vidalia Onion Casserole

In the summer, squash is a plenty and the Vidalia's are sweet.  Add some sharp cheddar and salty butter crackers and you have the perfect summer comfort food.  Being from Georgia, we pride ourselves on being home to the "Vidalia".  It's not just a sweet onion - it's THE sweet onion and it's only grown in Georgia.

Aren't Vidalia Onions and sweet onions the same?

Not quite. All Vidalia onions are sweet onions but not all sweet onions can call themselves Vidalia's.  They are grown in the south eastern part of Georgia, in a relatively small area when you think about agriculture.  Vidalia's ae unusually flat for an onion and in 1989 a Federal Marketing Order protected it's brand name and quality of standards.  If you want to be sure about your Vidalia - in the store it should have a PLU code of 4195.  In the South, when they're in season, we buy in bulk!  The best way to store a Vidalia is to wrap each one individually in newspaper and keep them in a cool dark place.  You'll enjoy these for weeks.

Why is it called summer squash?

Most summer squashes are harvested early in the season while they're still immature and the rind is tender and edible.  The smaller the squash, the sweeter it will be so if you're going to eat them raw - smaller is better.  Summer squash is incredible versatile and can be used in both sweet and savory dishes.

How do I make Squash Casserole?

It's really easy.  Find some bright yellow summer squash, grab a nice size Vidalia onion, some cheese and butter, round butter crackers, a couple of eggs. and some milk and you're all set to go.

Preheat your oven to 400 degrees.  Slice your squash and onion in uniform, thin slices.  I use a mandolin for both the squash and onion and it's done in the blink of an eye.  Put them in a large skillet with a little water, cover and cook until soft, about 5 minutes.  Drain and remove from the heat.

Summer Squash and Vidalia Onion Casserole

While your squash is cooking, crush your crackers (I do it right in the sleeve - pretty fun actually) and mix them with the cheese and parsley in a medium bowl.

Summer Squash and Vidalia Onion Casserole

Add half of the cracker mixture to the squash and mix well.  In a small bowel whisk your eggs and milk together.

Summer Squash and Vidalia Onion Casserole


Add to the squash mixture, stir in the melted butter, and salt and pepper and then transfer to a 2 qt or 13x9" baking dish.

Summer Squash and Vidalia Onion Casserole

Sprinkle the remaining cracker mixture evenly over the top and dot with 2 Tbs cold butter.

Summer Squash and Vidalia Onion Casserole

Bake for 25-30 minutes or until a rich golden brown.


Summer Squash and Vidalia Onion Casserole


Summer Squash and Vidalia Onion Casserole

Summer Squash and Vidalia Onion Casserole

This summer staple is bright and beautiful to look at and even better to taste.
5 from 1 vote
Prep Time 20 minutes
Cook Time 25 minutes
Course Side Dish
Cuisine American, Southern
Servings 8
Calories 168 kcal


  • Mandolin if available
  • Skillet
  • Baking dish


  • 4 cups yellow Squash thinly sliced
  • ½ cup Vidalia onion chopped
  • 35 Ritz crackers crushed
  • 1 cup cheddar cheese shredded
  • ¼ cup dried parsley
  • 2 eggs beaten
  • ¾ cup whole milk
  • ¼ butter melted
  • 2 Tbs butter cold and cubed
  • Salt & Pepper to taste


  • Preheat oven to 400℉
  • Place squash and onion in a large skillet over medium heat. Pour in a small amount of water. Cover, and cook until squash is tender, about 5 minutes. Drain well, and place in a large bowl.
  • In a medium bowl, mix together cracker crumbs and cheese; add half into the cooked squash and onions, mixing well.
  • In a small bowl, mix together eggs and milk, then add to squash mixture.
  • Stir in ¼ cup melted butter, and season with salt and pepper.
  • Spread into a 9x13 inch baking dish.
  • Sprinkle with remaining cracker mixture, and dot with 2 tablespoons butter.
  • Bake in preheated oven for 25 minutes, or until lightly browned


Calories: 168kcalCarbohydrates: 13gProtein: 8gFat: 10gSaturated Fat: 5gPolyunsaturated Fat: 2gMonounsaturated Fat: 3gTrans Fat: 1gCholesterol: 58mgSodium: 238mgPotassium: 261mgFiber: 1gSugar: 4gVitamin A: 372IUVitamin C: 11mgCalcium: 178mgIron: 1mg
Keyword Casserole, Cheese, Onions, Squash, Summer Squash, Vidalia ONions
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