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Cheesy Summer Squash Caserole Recipe
Cheesy Summer Squash Caserole Recipe photo by Taste of Home

Cheesy Summer Squash Caserole Recipe

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Onion and cheddar cheese perk up the rich flavor of summer squash in this comforting casserole from Katherine Metz, Jacksonville, Florida (with husband Chuck, at right). A crispy cornflake-crumb topping adds a little crunch.
TOTAL TIME: Prep: 10 min. Bake: 25 min.
MAKES:2 servings
TOTAL TIME: Prep: 10 min. Bake: 25 min.
MAKES: 2 servings


  • 2 small yellow summer squash, sliced
  • 1/4 cup chopped onion
  • 1/2 teaspoon salt, divided
  • 1 egg
  • 1/4 cup mayonnaise
  • 2 teaspoons sugar
  • Pepper to taste
  • 1/4 cup shredded cheddar cheese
  • 2 tablespoons crushed cornflakes
  • 1-1/2 teaspoons butter, melted


  1. In a small saucepan, combine squash, onion and 1/4 teaspoon salt. Cover with water. Bring to a boil. Reduce heat; simmer, uncovered, for 2 minutes or until squash is crisp-tender. Drain.
  2. In a small bowl, whisk the egg, mayonnaise, sugar, pepper and remaining salt until blended. Stir in cheese and squash mixture. Transfer to a greased 2-cup baking dish. Toss the cornflakes and butter; sprinkle over top.
  3. Bake, uncovered, at 350° for 25-30 minutes or until golden brown and bubbly. Yield: 2 servings.
Originally published as Summer Squash Casserole in Taste of Home April/May 2004, p47

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Reviewed Aug. 17, 2015

"Yum! I cut up 9 small yellow squash (approx. 5-6" long) that amounted to approx. 8 c. Used 4 eggs and 1 c. mayo. I didn't have the recipe in front of me and forgot the onion and sugar, but it was just fine without it. Approx. 1 c. of cheese. Added a couple dashes of an herb blend. Didn't have cornflakes so crushed some croutons on top. It was very good!!"

Reviewed Jan. 3, 2015

"I have been regularly making this recipe since it was first published. Many times I have quadrupled the portions and brought it to family get togethers. Everyone loves it. Best squash casserole recipe I've found. The only thing I do different is crush New York Texas Toast garlic and butter croutons for the topping."

Reviewed Aug. 4, 2014

"This was only ok. Maybe I just don't like summer squash?"

Reviewed Jul. 17, 2014

"Really good easy recipe even ate it cold!"

Reviewed Jul. 2, 2014

"We Relly enjoyed the recipe. I did use 4 small squash which was perfect for 2. Just a reminder that not all corn flakes are gluten free. I did use certified gluten free corn flakes and probably closer to 1/4 cup. I will be making this one again."

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