Creamy, cheesy, and irresistibly crisp on top, the Perfect Squash Casserole is a comforting Southern classic that transforms simple ingredients into a crowd-pleasing side dish. This recipe highlights tender yellow squash and sweet onions, folded into a rich mixture of sour cream, sharp cheddar, and Parmesan cheese. Topped with buttery, toasted Ritz cracker crumbs, every bite is a perfect balance of creamy and crunchy. With just 20 minutes of prep time and a golden bake in the oven, this casserole is an effortless addition to your next family dinner or holiday gathering. Whether served alongside roasted meats or as part of a vegetarian spread, this dish is sure to be a favorite on any table.
Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish lightly with cooking spray or olive oil.
In a large pot, bring salted water to a boil. Add the sliced yellow squash and diced onion, and cook for about 5 minutes, or until the squash is slightly tender. Drain the vegetables well and set aside.
In a large skillet, melt 2 tablespoons of the butter over medium heat. Add the crushed Ritz crackers and stir until they're evenly coated and lightly toasted. Remove from heat and set the crackers aside for the topping.
In a large mixing bowl, whisk the eggs. Stir in the sour cream, grated Parmesan cheese, shredded cheddar cheese, black pepper, garlic powder, and the remaining 2 tablespoons of melted butter.
Gently fold the cooked squash and onion into the cheese mixture until evenly coated.
Transfer the squash mixture into the prepared baking dish, spreading it out evenly. Sprinkle the toasted Ritz cracker topping evenly over the top.
Bake in the preheated oven for 30-35 minutes, or until the top is golden brown and the casserole is bubbling around the edges.
Allow the casserole to cool for 5-10 minutes before serving. Serve warm as a side dish for any meal.
Calories |
2650 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 214.1 g | 274% | |
| Saturated Fat | 112.8 g | 564% | |
| Polyunsaturated Fat | 5.8 g | ||
| Cholesterol | 888 mg | 296% | |
| Sodium | 4833 mg | 210% | |
| Total Carbohydrate | 119.9 g | 44% | |
| Dietary Fiber | 9.4 g | 34% | |
| Total Sugars | 47.8 g | ||
| Protein | 96.2 g | 192% | |
| Vitamin D | 2.7 mcg | 13% | |
| Calcium | 2255 mg | 173% | |
| Iron | 9.3 mg | 52% | |
| Potassium | 1961 mg | 42% | |
*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.