Are you ready to indulge in a delicious, comforting dish that embodies the warmth of a homemade meal? Look no further than this Deliciously Easy Squash Casserole Recipe that will warm your heart and delight your tastebuds. This classic Southern-style casserole is as much a feast for the eyes as it is for the palate, with its rich golden top, creamy interior, and an aroma that fills the kitchen with undeniable appeal. Fragrant garlic, buttery crackers, and melted cheddar cheese combine to create an irresistible experience for any lover of hearty comfort food.
Whether you’re savoring it on its own or using it as a side for festive gatherings, this squash casserole is simplicity at its best. Its ease of preparation makes this dish a favorite for cooks of all skill levels. With only a handful of ingredients, this showstopper can be realized in less than an hour. Plus, it’s vegetarian, making it a delicious inclusion for those seeking meatless options. The beauty of this recipe lies not only in its comforting flavors but also in its adaptability—perfect for dinner parties, family meals, or as a leftover the next day.
So gather your yellow squash and get ready to bake a dish that’s not only tasty but also fantastically fulfilling. With its rich, cheesy topping and cozy, creamy filling, this casserole is a testament to the heartwarming power of simple ingredients, combined with love.
Why You’ll Love This Deliciously Easy Squash Casserole Recipe
This delightful casserole might become your next favorite dish, and here’s why:
- Easy to make with minimal prep, making it perfect for busy weeknights.
- Vegetarian-friendly, allowing everyone to enjoy a hearty meal.
- The creamy and cheesy flavors meld beautifully with the tender squash.
- A crunchy, buttery topping adds an extra layer of texture and flavor.
- Perfect as a side or a standalone dish for any occasion.
Preparation Phase & Tools to Use
Before diving into creating this comforting squash casserole, setting the scene for a smooth cooking process is crucial. Begin by preheating your oven to 350°F (175°C) to ensure a consistent baking temperature. Use a 9×9 inch baking dish or a dish of similar size to properly accommodate the casserole mixture, allowing for even cooking. Greasing the baking dish lightly with butter or non-stick spray prevents the casserole from sticking and facilitates easy serving.
Having a large skillet ready is essential, as sautéing the squash and onions maximize their flavor and help achieve the perfect tender texture. Also, ensure you have mixing bowls on hand for combining ingredients and a small bowl for preparing the crumbly topping. To create the most hassle-free experience, gather your ingredients—such as the shredded cheddar cheese, sour cream, mayonnaise, egg, and seasonings—before starting to cook. This preparation not only saves time but also enables you to focus on the recipe’s flow without interruptions.

Ingredients
Gather these simple ingredients for a delicious outcome:
- 4 cups yellow squash, sliced (about 4–5 medium squash)
- 1 small onion, finely chopped
- 1 cup shredded cheddar cheese
- 1/2 cup sour cream
- 1/4 cup mayonnaise
- 1 egg, beaten
- 1/2 teaspoon garlic powder
- Salt and pepper to taste
- 1 cup crushed Ritz crackers or buttery breadcrumbs
- 2 tablespoons melted butter
Instructions
Step 1: Sautéing the Vegetables
Kick things off by preheating your oven to 350°F (175°C) and getting your baking dish greased and ready. In a large skillet over medium heat, add the sliced yellow squash and chopped onion. Sprinkle a pinch of salt over the veggies and let them sauté for about 8 to 10 minutes. You’ll know they’re done when the squash is tender and the onions are soft. This stage is key for driving flavor and ensuring the vegetables meld beautifully into the casserole. Once cooked, ensure to drain any excess liquid to avoid a watery casserole.
Step 2: Mixing the Ingredients
Next, focus on the creamy base by transferring your sautéed veggies into a large mixing bowl. Stir in the shredded cheddar cheese, sour cream, mayonnaise, beaten egg, and garlic powder. Season it all with salt and pepper to your taste. Stir well to ensure every slice of squash is coated in the deliciously creamy mixture, creating a luscious filling that will form the heart of your casserole.
Step 3: Assembling the Casserole
Once your creamy squash mixture is ready, pour it into the prepared greased baking dish, smoothing it out for an even layer. In a small separate bowl, combine the crushed Ritz crackers with melted butter. This mixture becomes your delectable topping. Carefully spoon and spread this crumbly mixture over the top of the casserole, giving it a generously appetizing layer that will bake to crispy perfection.
Step 4: Baking the Casserole
With everything set, place your assembled casserole in the preheated oven and allow it to bake for 30 to 35 minutes. You’ll know it’s finished when the top turns a beautiful golden brown and starts bubbling. Allow the casserole to rest and cool slightly for about 5 minutes before diving in. This period not only lets the flavors settle but also makes serving easier.

Variations
- Protein: Add cooked diced chicken or sausage to make it a heartier main dish.
- Vegetables: Incorporate spinach or bell peppers for added nutrients and color.
- Spices: Try different seasonings like paprika or cayenne pepper for an extra kick.
Cooking Notes
- The squash should be evenly sliced for consistent cooking.
- Draining the sautéed vegetables well prevents the casserole from becoming too watery.
- Feel free to adjust cheese variety based on preference, like using mozzarella or a spicy cheese blend for extra flavor.
Serving Suggestions
- Pair with a side of fresh salad or steamed greens for a balanced meal.
- Serve alongside roasted meats for a festive holiday spread.
Tips
- For a bolder flavor, consider sautéing the onions until caramelized.
- Prepare everything ahead and refrigerate; just bake before serving for ease on busy days.
Prep Time, Cook Time, Total Time
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Total Time: 50 minutes
Nutritional Information
- Calories: Approximately 220 per serving
- Protein: 6g
- Sodium: 450mg
FAQs
Can I make this casserole in advance?
Yes, you can prepare the casserole up to the baking stage, cover it, and refrigerate. Just bake it when ready to serve, adding an extra 5 minutes if it’s coming straight from the fridge.
Can I freeze the squash casserole?
While you can freeze this dish, the texture of the squash may change slightly. If freezing, wrap well and consume within two months for best results.
Can I substitute the squash with another vegetable?
Absolutely! Zucchini is a great substitute, or mix both for added variety.
How can I make this dish gluten-free?
Opt for gluten-free crackers for the topping, ensuring they are properly crushed for the right texture.
Conclusion
This Deliciously Easy Squash Casserole Recipe is more than just a meal; it’s a comforting embrace of flavors that brings joy with every bite. Perfect for any occasion, this casserole is ideal for those who love simple yet satisfying dishes. Whether you’re preparing it for a weekday dinner or adding it to a holiday feast, it’s sure to impress and warm the hearts of everyone around the table.
Get your ingredients ready, enjoy the process, and don’t forget to share with family and friends. Who knows, it might just become a beloved tradition in your own kitchen. Feel free to leave comments about your experience or any creative variations you’ve tried.
Print
Deliciously Easy Squash Casserole Recipe
- Total Time: 50 minutes
- Yield: 6 servings 1x
Description
This Deliciously Easy Squash Casserole Recipe is more than just a meal; it’s a comforting embrace of flavors that brings joy with every bite.
Ingredients
- 4 cups yellow squash, sliced (about 4–5 medium squash)
- 1 small onion, finely chopped
- 1 cup shredded cheddar cheese
- 1/2 cup sour cream
- 1/4 cup mayonnaise
- 1 egg, beaten
- 1/2 teaspoon garlic powder
- Salt and pepper to taste
- 1 cup crushed Ritz crackers or buttery breadcrumbs
- 2 tablespoons melted butter
Instructions
- Kick things off by preheating your oven to 350°F (175°C) and getting your baking dish greased and ready. In a large skillet over medium heat, add the sliced yellow squash and chopped onion. Sprinkle a pinch of salt over the veggies and let them sauté for about 8 to 10 minutes.
- Once cooked, ensure to drain any excess liquid to avoid a watery casserole. Transfer your sautéed veggies into a large mixing bowl. Stir in the shredded cheddar cheese, sour cream, mayonnaise, beaten egg, and garlic powder.
- Season it all with salt and pepper to your taste. Stir well to ensure every slice of squash is coated in the deliciously creamy mixture.
- Pour the creamy squash mixture into the prepared greased baking dish. In a small separate bowl, combine the crushed Ritz crackers with melted butter. Spoon and spread this crumbly mixture over the top of the casserole.
- Place your assembled casserole in the preheated oven and allow it to bake for 30 to 35 minutes. You’ll know it’s finished when the top turns a beautiful golden brown and starts bubbling.
- Allow the casserole to rest and cool slightly for about 5 minutes before diving in.
Notes
The squash should be evenly sliced for consistent cooking. Draining the sautéed vegetables well prevents the casserole from becoming too watery.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Dinner
Nutrition
- Calories: 220 kcal
- Sodium: 450 mg
- Protein: 6 g