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"A freshly baked Southern-style squash casserole in a white ceramic dish, topped with a golden, crispy Ritz cracker crust, garnished with fresh parsley."

Squash Casserole Recipe

Angela
This squash casserole recipe is creamy, cheesy, and topped with a crispy, buttery crust. A Southern comfort classic perfect for any meal or gathering!
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Side Dish
Cuisine American, Southern
Servings 6
Calories 280 kcal

Ingredients
  

Main Ingredients:

  • Yellow squash 4 cups, sliced – The star of the dish! Choose fresh, firm squash for the best flavor and texture.
  • Onion ½ cup, finely chopped – Adds a subtle sweetness and depth of flavor.
  • Butter 3 tablespoons – Enhances richness and helps sauté the squash to perfection.
  • Eggs 2, beaten – Helps bind the casserole together, giving it structure.
  • Milk ½ cup – Creates a smooth, creamy consistency in the casserole.
  • Cheddar cheese 1 ½ cups, shredded – For that gooey, cheesy goodness! Feel free to mix in some Monterey Jack for extra flavor.
  • Sour cream ½ cup – Adds a tangy richness and extra creaminess.

For the Crunchy Topping:

  • Ritz crackers 1 cup, crushed – Creates a buttery, golden crust on top. Panko breadcrumbs work as a great alternative.
  • Butter 2 tablespoons, melted – Helps the topping crisp up beautifully.
  • Parmesan cheese ¼ cup, grated, optional – Adds a nutty, salty kick to the crust.

Seasonings:

  • Garlic powder ½ teaspoon – Enhances the savory depth.
  • Salt & black pepper to taste – Brings out all the flavors.
  • Paprika ¼ teaspoon, optional – A touch of smokiness for added warmth.

Instructions
 

Step 1: Preheat and Prep

  • Preheat your oven to 350°F (175°C) and lightly grease a 9x13-inch baking dish to prevent sticking.
  • Wash the yellow squash, trim the ends, and slice them into ¼-inch thick rounds.

Step 2: Sauté the Squash and Onions

  • In a large skillet, melt 3 tablespoons of butter over medium heat.
  • Add the sliced squash and chopped onions, cooking for about 8-10 minutes until the squash is tender and most of the moisture has evaporated.
  • Remove from heat and allow the mixture to cool slightly.
  • 💡 Pro Tip: If the squash releases too much water, drain it using a colander and pat it dry with paper towels. This helps prevent a watery casserole.

Step 3: Prepare the Creamy Mixture

  • In a large mixing bowl, whisk together:
  • Eggs
  • Milk
  • Sour cream
  • Shredded cheddar cheese
  • Garlic powder, salt, and black pepper
  • Stir in the cooked squash and onions, ensuring everything is well coated.

Step 4: Assemble the Casserole

  • Pour the mixture into the prepared baking dish, spreading it evenly.
  • In a small bowl, mix together the crushed Ritz crackers, melted butter, and Parmesan cheese (if using).
  • Sprinkle the buttery cracker topping evenly over the casserole.

Step 5: Bake to Perfection

  • Place the dish in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and crispy.
  • Remove from the oven and let it sit for 5 minutes before serving.

Notes

Nutrition Information (Per Serving):

  • Calories: 280 kcal
  • Total Fat: 18g
  • Saturated Fat: 9g
  • Cholesterol: 85mg
  • Sodium: 420mg
  • Carbohydrates: 18g
  • Fiber: 2g
  • Sugar: 4g
  • Protein: 10g
Keyword cheesy squash casserole, Squash casserole