Southern Cheesy Yellow Squash Casserole with Buttery Ritz Crunch

Discover the quintessential Southern comfort dish that combines tender garden vegetables with a rich, velvety cheese sauce and an irresistible, buttery crunch. This scalloped squash casserole is a timeless favorite, perfect for family dinners or holiday gatherings where a reliable side dish is needed.

The combination of sweet summer squash, sharp cheddar, and a perfectly crisp cracker topping creates a textural masterpiece that is both nostalgic and deeply satisfying to eat.

Southern yellow squash casserole is a staple of traditional home cooking, celebrated for its simple preparation and robust flavors. By sautéing the squash with sweet Vidalia onions before incorporating them into a creamy custard-like base, the natural sweetness of the vegetables is highlighted.

The addition of sharp cheddar provides a savory depth that balances the creaminess of the sour cream. Finished with a golden layer of butter-tossed Ritz crackers, this dish offers a delightful contrast between the soft, savory interior and the crunchy, buttery exterior, ensuring a memorable dining experience every single time.

Ingredients

Why this recipe works

The method of sautéing the squash before baking is essential for achieving the perfect texture. By cooking off the excess water in the skillet first, the casserole stays firm rather than becoming soupy in the oven. This step concentrates the flavor of the squash and ensures the final dish is cohesive and rich.

The combination of sour cream and a whisked egg creates a stable, creamy binder that holds the squash and cheese together. This base is robust enough to support the weight of the crunchy topping without losing its integrity. The use of sharp cheddar provides a bold flavor profile that complements the mild, sweet nature of the summer squash.

Notes and substitutions

When selecting squash, choose firm, smaller yellow crookneck squash as they contain fewer large seeds and have a more delicate flavor. If larger squash are used, remove the seeds to prevent excess moisture.

Use high-quality sharp cheddar cheese, preferably freshly shredded, as pre-shredded cheese often contains anti-caking agents that hinder proper melting.

The cast-iron skillet is ideal for this recipe as it provides even heat distribution during the sauté phase. If a cast-iron skillet is unavailable, a heavy-bottomed stainless steel pan can be used.

Ensure the baking dish is appropriately sized so the casserole is not spread too thin, which helps maintain the desired depth and creamy consistency.

• yellow crookneck squash: zucchini or any summer squash variety
• sharp cheddar: mild cheddar or Monterey Jack cheese

Equipment

• cast-iron skillet
• mixing bowl
• whisk
• knife
• cutting board
• baking dish