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Yellow Squash Casserole

This summer yellow squash casserole is the quintessential summertime vegetable casserole recipe. It's packed with yellow squash, onion, garlic, cheese, and sour cream and topped with buttery crackers.

Prep Time
30 mins
Cook Time
30 mins
Total Time
1 hr 15 mins
Servings: 12 servings
Calories: 140 kcal
Course: Side Dish
Cuisine: American

Ingredients

  • 2 tablespoons olive oil
  • 3 pounds yellow squash thinly sliced
  • 1 large yellow onion thinly sliced
  • 2 cloves garlic minced
  • 2 large eggs
  • 1 cup shredded cheddar cheese divided
  • ½ cup sour cream
  • ½ teaspoon kosher salt
  • ½ teaspoon black pepper
  • ½ teaspoon Italian seasoning
  • 3 tablespoons salted butter
  • 1 sleeve butter crackers Ritz, 30-32 crackers

Instructions

    Cup of Yum
  1. Preheat your oven to 375 degrees F and spray a 9x13 casserole dish with non-stick spray.
  2. In a 12-inch high-sided skillet set over medium-high heat, add olive oil.
  3. When the oil is hot, add the thinly sliced squash and onion. Saute gently until the squash is soft but not falling part. You want to cook out the liquid but you're not looking to brown the squash or the onion. This step will take about 10 minutes.
  4. Add in the garlic and saute for 1 minute.
  5. Spoon the squash mixture into a fine mesh colander set over a bowl or the sink. Gently push on the squash to help it drain any remaining water. This step helps prevent the casserole from becoming too watery while baking.
  6. While the squash drains, work on the second step of your filling.
  7. In a large bowl, whisk the eggs and then whisk in 1/2 cup shredded cheese, sour cream, kosher salt, black pepper, and Italian seasoning.
  8. Add the drained squash mixture to the egg/sour cream mixture and stir gently to combine.
  9. Add the squash mixture to the prepared pan.
  10. In a small bowl, mix together the melted butter and crushed butter crackers until evenly coated.
  11. Top the casserole with 1/2 of the cracker mixture, then sprinkle with remaining 1/2 cup of shredded cheddar cheese, and then the rest of hte cracker mixture.
  12. Add to the preheated oven and bake for 35 minutes or until the top is golden brown and toasted.
  13. Serve warm, store leftovers in a covered container, and eat within 3-4 days.

Nutrition Information

Serving 1serving Calories 140kcal (7%) Carbohydrates 6g (2%) Protein 5g (10%) Fat 11g (17%) Saturated Fat 5g (25%) Polyunsaturated Fat 1g Monounsaturated Fat 4g Trans Fat 0.1g Cholesterol 54mg (18%) Sodium 199mg (8%) Potassium 351mg (10%) Fiber 2g (8%) Sugar 3g (6%) Vitamin A 515IU (10%) Vitamin C 20mg (22%) Calcium 104mg (10%) Iron 1mg (6%)

Nutrition Facts

Serving: 12servings

Amount Per Serving

Calories 140

% Daily Value*

Serving 1serving
Calories 140kcal 7%
Carbohydrates 6g 2%
Protein 5g 10%
Fat 11g 17%
Saturated Fat 5g 25%
Polyunsaturated Fat 1g 6%
Monounsaturated Fat 4g 20%
Trans Fat 0.1g 5%
Cholesterol 54mg 18%
Sodium 199mg 8%
Potassium 351mg 7%
Fiber 2g 8%
Sugar 3g 6%
Vitamin A 515IU 10%
Vitamin C 20mg 22%
Calcium 104mg 10%
Iron 1mg 6%

* Percent Daily Values are based on a 2,000 calorie diet.