The Best Yellow Squash Casserole

Creamy, cheesy, and irresistibly comforting, "The Best Yellow Squash Casserole" is a crowd-pleasing side dish that's perfect for family dinners, potlucks, or holiday gatherings. This easy-to-make casserole combines tender yellow squash sautéed with onions and seasoned to perfection, then folded into a rich mixture of sour cream, cheddar cheese, and a hint of garlic. Topped with a buttery blend of crushed Ritz crackers and Parmesan cheese, this golden-baked dish achieves the ultimate crunch with every bite. With just 20 minutes of prep and a bubbling oven-bake finish, this casserole embodies homestyle flavor with simple ingredients that shine. Whether you're highlighting seasonal squash or adding a standout side to your table, this recipe is sure to delight!

Nutriscore Rating: 57/100

Prep Time:20 mins

Cook Time:40 mins

Total Time:60 mins

Servings: 6

Ingredients

• 4 cups (sliced) yellow squash
• 1 cup (chopped) onion
• 3 tablespoons butter
• 1 large egg
• 1 cup sour cream
• 1 cup shredded cheddar cheese
• 1 cup (crushed) Ritz crackers
• 0.5 cup (grated) parmesan cheese
• 0.5 teaspoon granulated garlic
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 1 spray (for greasing) olive oil spray

Directions

Step 1

Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish with olive oil spray and set aside.

Step 2

In a large skillet over medium heat, melt the butter. Add the chopped onion and saute until it becomes soft and translucent, about 5 minutes.

Step 3

Add the sliced yellow squash to the skillet with the onion. Season with salt, black pepper, and granulated garlic. Cook for 8-10 minutes, stirring occasionally, until the squash is tender and any excess liquid is evaporated.

Step 4

Remove the skillet from the heat and allow the mixture to cool slightly. In a large mixing bowl, beat the egg, then stir in the sour cream and shredded cheddar cheese until well combined.

Step 5

Fold the cooked squash and onion mixture into the sour cream and cheese mixture until evenly coated.

Step 6

Pour the mixture into the prepared baking dish, spreading it out evenly.

Step 7

In a small bowl, mix the crushed Ritz crackers with grated Parmesan cheese. Sprinkle this mixture evenly over the top of the casserole.

Step 8

Bake the casserole in the preheated oven for 25-30 minutes, or until the topping is golden brown and the casserole is bubbly.

Step 9

Remove the casserole from the oven and let it sit for 5 minutes to cool slightly. Serve warm and enjoy!

Nutrition Facts

Serving size	1211.5 grams (1211.5g)

Amount per serving	% Daily Value*
Calories	1909

Total Fat 152.50g	196%
Saturated Fat 88.00g	440%
Polyunsaturated Fat 3.40g
Cholesterol 599mg	200%
Sodium 4259mg	185%
Total Carbohydrate 88.60g	32%
Dietary Fiber 8.00g	29%
Total Sugars 41.50g
Protein 69.40g	139%

Vitamin D 61IU	303%
Calcium 1749mg	135%
Iron 6mg	32%
Potassium 1481mg	32%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 68.5%

Protein: 13.8%

Carbs: 17.7%