Pattypan Squash Casserole Recipe

We’ve always been fans of fresh, seasonal produce, and pattypan squash stands out with its quirky, flying-saucer shape and mild, buttery flavor. Originating from the Americas, this versatile veggie takes center stage in our Pattypan Squash Casserole Recipe, turning simple ingredients into a comforting family favorite that’s easy to whip up.

What makes this dish irresistible is how it blends tender squash with cheesy goodness and herbs, creating a hearty side that elevates any meal. Whether you’re exploring summer harvests or seeking a nutritious twist on classics, we’re confident this recipe will become a staple in your kitchen.

Ingredients

In our Pattypan Squash Casserole recipe, we gather fresh, seasonal ingredients that highlight the tender, buttery texture of pattypan squash and blend it with savory flavors for a comforting dish. Below, we list the ingredients in the order they are typically used, including precise measurements and any necessary prep details to ensure accuracy and ease.

  • 4 medium pattypan squashes (about 2 pounds total, sliced into 1/4-inch rounds for even cooking and to maximize their mild, nutty flavor)
  • 1 large onion (diced finely, approximately 1 cup, to provide a sweet base for sautéing and enhance the overall aroma)
  • 2 cloves garlic (minced, for adding a pungent, aromatic depth that complements the squash’s subtlety)
  • 1 cup shredded cheddar cheese (use a sharp variety for a bold, melty contrast that binds the casserole together)
  • 1/2 cup whole milk (for creating a creamy mixture that helps achieve the perfect casserole consistency)
  • 2 large eggs (beaten, to act as a binding agent and add richness to the dish)
  • 1/2 cup breadcrumbs (preferably panko for a crisp topping, to provide a golden, crunchy finish)
  • 1 tablespoon fresh thyme (chopped, or 1 teaspoon dried, to infuse herbal notes that elevate the fresh taste of the squash)
  • 1 teaspoon salt (to season and balance flavors, adjustable based on preference)
  • 1/2 teaspoon black pepper (freshly ground, for a subtle kick that enhances the savory elements)

Tools and Equipment

To bring our Pattypan Squash Casserole to life, we rely on a few essential tools and equipment that ensure smooth preparation and perfect results. Gathering these items beforehand helps us work efficiently and safely in the kitchen.

Essential Kitchen Tools

We recommend the following tools, listed in the order they’ll be used during preparation:

  • Knife: A sharp chef’s knife for slicing the pattypan squashes and chopping the onion and garlic. We prefer one with an 8-inch blade for precision and ease.
  • Cutting board: A sturdy wooden or plastic board to provide a stable surface for all our chopping tasks.
  • Mixing bowls: At least two medium-sized bowls—one for combining ingredients like eggs, milk, and cheese, and another for mixing breadcrumbs and herbs.
  • Measuring cups and spoons: Accurate sets for measuring ingredients such as shredded cheddar cheese, whole milk, and seasonings to maintain the recipe’s balance.
  • Grater: A box grater or food processor attachment for shredding cheese if it’s not pre-shredded, ensuring even melting in the casserole.

Baking Equipment

For baking our casserole to golden perfection, these items are crucial:

  • Baking dish: A 9×13-inch glass or ceramic dish for assembling and baking the casserole. This size accommodates the volume of our pattypan squashes and other ingredients without overflow.
  • Oven: A standard oven preheated to 375°F (190°C) for even cooking. We suggest using an oven thermometer to verify temperature accuracy.
  • Whisk or fork: For beating eggs and blending the mixture smoothly before pouring it into the baking dish.
  • Spatula: A heat-resistant silicone spatula for stirring and transferring the squash mixture into the baking dish.

If you’re new to casserole recipes, note that having the right tools can reduce prep time significantly. For instance, a good knife not only speeds up chopping but also minimizes injury risks. We always emphasize quality tools to enhance our cooking experience with dishes like Pattypan Squash Casserole.

Instructions

We make preparing our Pattypan Squash Casserole straightforward and enjoyable ensuring every step brings out the squash’s buttery texture and savory flavors. Follow these precise instructions to achieve a creamy comforting dish that elevates your seasonal meals.

Prepare the Pattypan Squash

First we wash the 4 medium pattypan squashes under cold water to remove any dirt then pat them dry with a clean towel. Next we trim the stems and slice each squash into ¼-inch thick rounds for even cooking. We finely chop 1 large onion and mince 2 cloves of garlic to release their aromatic essence.

In a large skillet over medium heat we sauté the chopped onion and minced garlic in 2 tablespoons of olive oil for about 5 minutes until they soften and turn translucent. Add the sliced pattypan squash to the skillet along with 1 teaspoon of salt and ½ teaspoon of black pepper then cook for 8-10 minutes stirring occasionally until the squash becomes tender yet still holds its shape releasing a subtle earthy sweetness.

Assemble the Casserole

We preheat our oven to 375°F while preparing the mixture. In a large mixing bowl we whisk together 2 large eggs 1 cup of whole milk and 1 tablespoon of fresh thyme leaves to create a creamy base. Stir in 2 cups of shredded cheddar cheese and 1 cup of breadcrumbs for a rich cheesy binding.

Layer half of the sautéed pattypan squash mixture evenly into a greased 9×13-inch baking dish then pour half of the egg and cheese mixture over it. Repeat with the remaining squash and topping ensuring the layers are compact for a cohesive casserole. Finally we sprinkle an additional ½ cup of shredded cheddar cheese on top for a golden crust that adds irresistible crunch.

Bake the Casserole

We place the assembled casserole in the preheated oven and bake for 30-35 minutes until the top is bubbly and golden brown. To check for doneness we insert a knife into the center; it should come out clean and the dish should emit a warm herbaceous aroma. Once baked we remove it from the oven and let it rest for 5 minutes before serving to allow the flavors to meld.

Make-Ahead Instructions

As we wrap up our detailed preparation steps for the Pattypan Squash Casserole, let’s explore how to make this dish even more convenient by preparing it in advance. We often recommend these strategies to save time while preserving the casserole’s creamy texture and savory flavors, ensuring your fresh pattypan squash shines in every bite.

Prepping Ingredients Ahead

To streamline your cooking process, we suggest preparing the vegetables and other components up to 24 hours in advance:

  • Wash and slice the pattypan squash: Slice 4 medium pattypan squashes into ¼-inch thick rounds and store them in an airtight container lined with paper towels to absorb moisture, preventing sogginess.
  • Chop aromatics: Dice 1 large onion and mince 3 cloves of garlic, then place them in a separate sealed bag or container in the refrigerator. This keeps their fresh, pungent aroma intact for sautéing later.
  • Prepare the creamy base: In a bowl, whisk together 2 large eggs, 1 cup of whole milk, 2 cups of shredded cheddar cheese, 1 teaspoon of salt, ½ teaspoon of black pepper, and 1 tablespoon of chopped fresh thyme. Cover and refrigerate the mixture to let the flavors meld, but stir well before using to ensure even consistency.

Assembling the Casserole in Advance

For even greater efficiency, assemble the entire casserole up to 1 day ahead:

  1. Layer the ingredients: In a greased 9×13-inch baking dish, start by arranging the sliced pattypan squash, sautéed onion, and garlic mixture in layers as outlined in our preparation section. Pour the creamy base over the top and sprinkle ½ cup of breadcrumbs evenly.
  2. Cover and store: Wrap the assembled dish tightly with plastic wrap or aluminum foil and refrigerate it. This allows the squash to absorb the cheesy, herbaceous flavors overnight, enhancing its tender, buttery appeal.
  3. Baking adjustments: When ready to bake, remove the dish from the refrigerator and let it sit at room temperature for 15-20 minutes to prevent cracking. Bake as directed, adding 5-10 minutes to the original baking time if needed to achieve that golden, bubbly finish.

Storage and Reheating Tips

We advise handling storage with care to maintain the casserole’s quality:

  • Refrigerator storage: Store the fully assembled, unbaked casserole in the fridge for up to 24 hours. If baked, leftovers can be refrigerated in an airtight container for 3-4 days, retaining their warm, comforting essence.
  • Freezer options: For longer-term make-ahead, freeze the assembled (unbaked) casserole for up to 2 months. Thaw overnight in the refrigerator before baking, and always check for even heating to preserve the squash’s delicate texture.
Storage Method Duration Key Tips
Refrigerator (unbaked) Up to 24 hours Cover tightly to avoid drying out.
Refrigerator (baked leftovers) 3-4 days Reheat in oven at 350°F for 15-20 minutes.
Freezer (unbaked) Up to 2 months Thaw fully before baking for best results.

By following these make-ahead instructions, we ensure your Pattypan Squash Casserole remains a hassle-free favorite for busy weeknights or gatherings.

Conclusion

We’ve loved bringing this Pattypan Squash Casserole to life for you. It’s a straightforward way to savor fresh flavors that brighten any gathering.

Trust us, once you’ve tried it, it’ll become a reliable favorite in your recipe collection.

Frequently Asked Questions

What is pattypan squash and why is it popular?

Pattypan squash is a unique, saucer-shaped summer squash with a mild, buttery flavor that’s perfect for various dishes. It’s popular for its versatility, nutritional benefits, and ability to enhance meals with a tender texture. This recipe uses it in a comforting casserole, making it a great way to enjoy fresh, seasonal produce.

What ingredients are needed for Pattypan Squash Casserole?

You’ll need 4 medium pattypan squashes, 1 large onion, garlic, shredded cheddar cheese, whole milk, eggs, breadcrumbs, fresh thyme, salt, and black pepper. These ingredients create a savory, creamy dish that highlights the squash’s natural flavors, with measurements provided for easy preparation.

What tools and equipment are required to make the casserole?

Essential tools include a sharp chef’s knife, cutting board, mixing bowls, measuring cups and spoons, a grater, baking dish, oven, whisk or fork, and a heat-resistant spatula. Using quality tools helps streamline prep, reduce time, and ensure perfect results, especially for beginners.

How do I prepare Pattypan Squash Casserole?

Start by washing and slicing the pattypan squash, then sauté it with onion and garlic. Mix eggs, milk, and cheese for a creamy base, layer everything in a baking dish, and bake until golden and bubbly. Let it rest before serving for the best texture and flavor.

Can I make Pattypan Squash Casserole ahead of time?

Yes, prep ingredients like sliced squash and chopped aromatics up to 24 hours in advance, or assemble the full casserole a day ahead to let flavors meld. This makes it ideal for busy schedules, as you can bake it fresh when needed.

How should I store and reheat the casserole?

Store unbaked casserole in the fridge for up to 24 hours or freeze for longer. Baked leftovers last 3-4 days refrigerated. Reheat in the oven at 350°F until warmed through, or use the microwave for quicker results, maintaining the dish’s creamy texture.