Posh Yellow Squash Casserole

Elevate your next family gathering or holiday meal with this Posh Yellow Squash Casserole—a creamy, cheesy delight that transforms humble yellow squash into a show-stopping side dish. Bursting with flavor from tender yellow squash and onions sautéed in butter, this luxurious recipe is enriched with sharp cheddar, Parmesan, and tangy sour cream, then bound together with fluffy eggs for a perfect texture. A buttery crushed Ritz cracker topping adds irresistible crunch, making this casserole as comforting as it is elegant. With its golden, bubbly finish and optional garnish of fresh parsley, this dish strikes the perfect balance between rustic charm and sophisticated flavor. Ideal for potlucks, festive feasts, or cozy dinners, this casserole is ready in just under an hour and is guaranteed to impress every guest at your table.

Nutriscore Rating: 50/100

Prep Time:20 mins

Cook Time:35 mins

Total Time:55 mins

Servings: 6

Ingredients

• 4 cups yellow squash
• 1 small yellow onion
• 4 tablespoons unsalted butter
• 1 cup shredded sharp cheddar cheese
• 0.25 cup grated Parmesan cheese
• 0.5 cup sour cream
• 2 large eggs
• 0.5 teaspoon garlic powder
• 1 teaspoon salt
• 0.25 teaspoon ground black pepper
• 1 cup Ritz crackers (crushed)
• 2 tablespoons unsalted butter (melted)
• 2 tablespoons chopped fresh parsley (optional, for garnish)

Directions

Step 1

Preheat your oven to 350°F (175°C) and lightly grease a 9x9-inch baking dish.

Step 2

Wash and slice the yellow squash into 1/4-inch thick rounds.

Step 3

Dice the yellow onion into small pieces.

Step 4

In a large skillet over medium heat, melt 2 tablespoons of butter. Add the sliced squash and onion, cooking until tender, about 8-10 minutes. Drain any excess liquid and set aside.

Step 5

In a large mixing bowl, combine the cheddar cheese, Parmesan cheese, sour cream, and eggs. Whisk until smooth.

Step 6

Add the cooked squash and onion mixture to the bowl and mix well. Season with garlic powder, salt, and pepper.

Step 7

Transfer the mixture into the prepared baking dish, spreading it evenly.

Step 8

In a small bowl, mix the crushed Ritz crackers with 2 tablespoons of melted butter. Sprinkle the cracker mixture over the top of the casserole.

Step 9

Bake the casserole in the preheated oven for 30-35 minutes, or until the top is golden brown and the casserole is bubbly.

Step 10

Remove from oven and let sit for 5 minutes before serving. Garnish with fresh parsley, if desired.

Nutrition Facts

Serving size	(1221.7g)

Amount per serving	% Daily Value*
Calories	2795.0

Total Fat 197.7g	0%
Saturated Fat 106.2g	0%
Polyunsaturated Fat 0.4g
Cholesterol 756.6mg	0%
Sodium 5416.7mg	0%
Total Carbohydrate 206.5g	0%
Dietary Fiber 6.2g	0%
Total Sugars 40.6g
Protein 75.1g	0%

Vitamin D 80IU	0%
Calcium 1372.1mg	0%
Iron 9.5mg	0%
Potassium 1476.3mg	0%

*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: 61.2%

Protein: 10.3%

Carbs: 28.4%